forked from lix-project/lix
1423 lines
48 KiB
C++
1423 lines
48 KiB
C++
#include "attr-path.hh"
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#include "common-eval-args.hh"
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#include "derivations.hh"
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#include "eval.hh"
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#include "get-drvs.hh"
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#include "globals.hh"
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#include "names.hh"
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#include "profiles.hh"
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#include "shared.hh"
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#include "store-api.hh"
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#include "user-env.hh"
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#include "util.hh"
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#include "json.hh"
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#include "value-to-json.hh"
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#include "xml-writer.hh"
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#include <cerrno>
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#include <ctime>
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#include <algorithm>
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#include <iostream>
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#include <sstream>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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using namespace nix;
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using std::cout;
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typedef enum {
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srcNixExprDrvs,
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srcNixExprs,
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srcStorePaths,
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srcProfile,
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srcAttrPath,
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srcUnknown
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} InstallSourceType;
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struct InstallSourceInfo
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{
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InstallSourceType type;
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Path nixExprPath; /* for srcNixExprDrvs, srcNixExprs */
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Path profile; /* for srcProfile */
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string systemFilter; /* for srcNixExprDrvs */
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Bindings * autoArgs;
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};
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struct Globals
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{
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InstallSourceInfo instSource;
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Path profile;
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std::shared_ptr<EvalState> state;
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bool dryRun;
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bool preserveInstalled;
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bool removeAll;
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string forceName;
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bool prebuiltOnly;
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};
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typedef void (* Operation) (Globals & globals,
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Strings opFlags, Strings opArgs);
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static string needArg(Strings::iterator & i,
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Strings & args, const string & arg)
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{
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if (i == args.end()) throw UsageError(
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format("'%1%' requires an argument") % arg);
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return *i++;
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}
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static bool parseInstallSourceOptions(Globals & globals,
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Strings::iterator & i, Strings & args, const string & arg)
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{
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if (arg == "--from-expression" || arg == "-E")
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globals.instSource.type = srcNixExprs;
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else if (arg == "--from-profile") {
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globals.instSource.type = srcProfile;
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globals.instSource.profile = needArg(i, args, arg);
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}
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else if (arg == "--attr" || arg == "-A")
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globals.instSource.type = srcAttrPath;
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else return false;
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return true;
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}
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static bool isNixExpr(const Path & path, struct stat & st)
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{
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return S_ISREG(st.st_mode) || (S_ISDIR(st.st_mode) && pathExists(path + "/default.nix"));
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}
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static void getAllExprs(EvalState & state,
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const Path & path, StringSet & attrs, Value & v)
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{
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StringSet namesSorted;
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for (auto & i : readDirectory(path)) namesSorted.insert(i.name);
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for (auto & i : namesSorted) {
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/* Ignore the manifest.nix used by profiles. This is
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necessary to prevent it from showing up in channels (which
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are implemented using profiles). */
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if (i == "manifest.nix") continue;
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Path path2 = path + "/" + i;
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struct stat st;
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if (stat(path2.c_str(), &st) == -1)
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continue; // ignore dangling symlinks in ~/.nix-defexpr
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if (isNixExpr(path2, st) && (!S_ISREG(st.st_mode) || hasSuffix(path2, ".nix"))) {
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/* Strip off the `.nix' filename suffix (if applicable),
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otherwise the attribute cannot be selected with the
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`-A' option. Useful if you want to stick a Nix
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expression directly in ~/.nix-defexpr. */
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string attrName = i;
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if (hasSuffix(attrName, ".nix"))
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attrName = string(attrName, 0, attrName.size() - 4);
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if (attrs.find(attrName) != attrs.end()) {
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printError(format("warning: name collision in input Nix expressions, skipping '%1%'") % path2);
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continue;
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}
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attrs.insert(attrName);
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/* Load the expression on demand. */
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Value & vFun = state.getBuiltin("import");
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Value & vArg(*state.allocValue());
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mkString(vArg, path2);
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if (v.attrs->size() == v.attrs->capacity())
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throw Error(format("too many Nix expressions in directory '%1%'") % path);
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mkApp(*state.allocAttr(v, state.symbols.create(attrName)), vFun, vArg);
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}
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else if (S_ISDIR(st.st_mode))
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/* `path2' is a directory (with no default.nix in it);
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recurse into it. */
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getAllExprs(state, path2, attrs, v);
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}
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}
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static void loadSourceExpr(EvalState & state, const Path & path, Value & v)
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{
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struct stat st;
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if (stat(path.c_str(), &st) == -1)
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throw SysError(format("getting information about '%1%'") % path);
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if (isNixExpr(path, st)) {
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state.evalFile(path, v);
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return;
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}
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/* The path is a directory. Put the Nix expressions in the
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directory in a set, with the file name of each expression as
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the attribute name. Recurse into subdirectories (but keep the
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set flat, not nested, to make it easier for a user to have a
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~/.nix-defexpr directory that includes some system-wide
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directory). */
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if (S_ISDIR(st.st_mode)) {
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state.mkAttrs(v, 1024);
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state.mkList(*state.allocAttr(v, state.symbols.create("_combineChannels")), 0);
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StringSet attrs;
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getAllExprs(state, path, attrs, v);
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v.attrs->sort();
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}
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}
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static void loadDerivations(EvalState & state, Path nixExprPath,
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string systemFilter, Bindings & autoArgs,
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const string & pathPrefix, DrvInfos & elems)
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{
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Value vRoot;
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loadSourceExpr(state, nixExprPath, vRoot);
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Value & v(*findAlongAttrPath(state, pathPrefix, autoArgs, vRoot));
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getDerivations(state, v, pathPrefix, autoArgs, elems, true);
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/* Filter out all derivations not applicable to the current
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system. */
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for (DrvInfos::iterator i = elems.begin(), j; i != elems.end(); i = j) {
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j = i; j++;
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if (systemFilter != "*" && i->querySystem() != systemFilter)
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elems.erase(i);
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}
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}
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static Path getDefNixExprPath()
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{
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return getHome() + "/.nix-defexpr";
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}
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static int getPriority(EvalState & state, DrvInfo & drv)
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{
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return drv.queryMetaInt("priority", 0);
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}
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static int comparePriorities(EvalState & state, DrvInfo & drv1, DrvInfo & drv2)
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{
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return getPriority(state, drv2) - getPriority(state, drv1);
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}
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// FIXME: this function is rather slow since it checks a single path
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// at a time.
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static bool isPrebuilt(EvalState & state, DrvInfo & elem)
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{
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Path path = elem.queryOutPath();
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if (state.store->isValidPath(path)) return true;
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PathSet ps = state.store->querySubstitutablePaths({path});
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return ps.find(path) != ps.end();
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}
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static void checkSelectorUse(DrvNames & selectors)
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{
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/* Check that all selectors have been used. */
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for (auto & i : selectors)
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if (i.hits == 0 && i.fullName != "*")
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throw Error(format("selector '%1%' matches no derivations") % i.fullName);
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}
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static DrvInfos filterBySelector(EvalState & state, const DrvInfos & allElems,
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const Strings & args, bool newestOnly)
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{
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DrvNames selectors = drvNamesFromArgs(args);
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if (selectors.empty())
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selectors.push_back(DrvName("*"));
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DrvInfos elems;
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set<unsigned int> done;
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for (auto & i : selectors) {
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typedef list<std::pair<DrvInfo, unsigned int> > Matches;
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Matches matches;
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unsigned int n = 0;
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for (DrvInfos::const_iterator j = allElems.begin();
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j != allElems.end(); ++j, ++n)
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{
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DrvName drvName(j->queryName());
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if (i.matches(drvName)) {
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i.hits++;
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matches.push_back(std::pair<DrvInfo, unsigned int>(*j, n));
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}
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}
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/* If `newestOnly', if a selector matches multiple derivations
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with the same name, pick the one matching the current
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system. If there are still multiple derivations, pick the
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one with the highest priority. If there are still multiple
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derivations, pick the one with the highest version.
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Finally, if there are still multiple derivations,
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arbitrarily pick the first one. */
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if (newestOnly) {
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/* Map from package names to derivations. */
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typedef map<string, std::pair<DrvInfo, unsigned int> > Newest;
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Newest newest;
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StringSet multiple;
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for (auto & j : matches) {
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DrvName drvName(j.first.queryName());
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int d = 1;
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Newest::iterator k = newest.find(drvName.name);
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if (k != newest.end()) {
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d = j.first.querySystem() == k->second.first.querySystem() ? 0 :
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j.first.querySystem() == settings.thisSystem ? 1 :
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k->second.first.querySystem() == settings.thisSystem ? -1 : 0;
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if (d == 0)
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d = comparePriorities(state, j.first, k->second.first);
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if (d == 0)
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d = compareVersions(drvName.version, DrvName(k->second.first.queryName()).version);
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}
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if (d > 0) {
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newest.erase(drvName.name);
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newest.insert(Newest::value_type(drvName.name, j));
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multiple.erase(j.first.queryName());
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} else if (d == 0) {
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multiple.insert(j.first.queryName());
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}
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}
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matches.clear();
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for (auto & j : newest) {
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if (multiple.find(j.second.first.queryName()) != multiple.end())
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printInfo(
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"warning: there are multiple derivations named '%1%'; using the first one",
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j.second.first.queryName());
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matches.push_back(j.second);
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}
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}
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/* Insert only those elements in the final list that we
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haven't inserted before. */
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for (auto & j : matches)
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if (done.find(j.second) == done.end()) {
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done.insert(j.second);
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elems.push_back(j.first);
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}
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}
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checkSelectorUse(selectors);
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return elems;
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}
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static bool isPath(const string & s)
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{
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return s.find('/') != string::npos;
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}
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static void queryInstSources(EvalState & state,
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InstallSourceInfo & instSource, const Strings & args,
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DrvInfos & elems, bool newestOnly)
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{
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InstallSourceType type = instSource.type;
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if (type == srcUnknown && args.size() > 0 && isPath(args.front()))
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type = srcStorePaths;
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switch (type) {
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/* Get the available user environment elements from the
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derivations specified in a Nix expression, including only
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those with names matching any of the names in `args'. */
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case srcUnknown:
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case srcNixExprDrvs: {
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/* Load the derivations from the (default or specified)
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Nix expression. */
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DrvInfos allElems;
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loadDerivations(state, instSource.nixExprPath,
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instSource.systemFilter, *instSource.autoArgs, "", allElems);
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elems = filterBySelector(state, allElems, args, newestOnly);
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break;
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}
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/* Get the available user environment elements from the Nix
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expressions specified on the command line; these should be
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functions that take the default Nix expression file as
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argument, e.g., if the file is `./foo.nix', then the
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argument `x: x.bar' is equivalent to `(x: x.bar)
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(import ./foo.nix)' = `(import ./foo.nix).bar'. */
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case srcNixExprs: {
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Value vArg;
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loadSourceExpr(state, instSource.nixExprPath, vArg);
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for (auto & i : args) {
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Expr * eFun = state.parseExprFromString(i, absPath("."));
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Value vFun, vTmp;
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state.eval(eFun, vFun);
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mkApp(vTmp, vFun, vArg);
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getDerivations(state, vTmp, "", *instSource.autoArgs, elems, true);
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}
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break;
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}
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/* The available user environment elements are specified as a
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list of store paths (which may or may not be
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derivations). */
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case srcStorePaths: {
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for (auto & i : args) {
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Path path = state.store->followLinksToStorePath(i);
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string name = baseNameOf(path);
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string::size_type dash = name.find('-');
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if (dash != string::npos)
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name = string(name, dash + 1);
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DrvInfo elem(state, "", nullptr);
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elem.setName(name);
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if (isDerivation(path)) {
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elem.setDrvPath(path);
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elem.setOutPath(state.store->derivationFromPath(path).findOutput("out"));
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if (name.size() >= drvExtension.size() &&
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string(name, name.size() - drvExtension.size()) == drvExtension)
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name = string(name, 0, name.size() - drvExtension.size());
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}
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else elem.setOutPath(path);
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elems.push_back(elem);
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}
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break;
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}
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/* Get the available user environment elements from another
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user environment. These are then filtered as in the
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`srcNixExprDrvs' case. */
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case srcProfile: {
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elems = filterBySelector(state,
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queryInstalled(state, instSource.profile),
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args, newestOnly);
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break;
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}
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case srcAttrPath: {
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Value vRoot;
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loadSourceExpr(state, instSource.nixExprPath, vRoot);
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for (auto & i : args) {
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Value & v(*findAlongAttrPath(state, i, *instSource.autoArgs, vRoot));
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getDerivations(state, v, "", *instSource.autoArgs, elems, true);
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}
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break;
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}
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}
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}
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static void printMissing(EvalState & state, DrvInfos & elems)
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{
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PathSet targets;
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for (auto & i : elems) {
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Path drvPath = i.queryDrvPath();
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if (drvPath != "")
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targets.insert(drvPath);
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else
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targets.insert(i.queryOutPath());
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}
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printMissing(state.store, targets);
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}
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static bool keep(DrvInfo & drv)
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{
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return drv.queryMetaBool("keep", false);
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}
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static void installDerivations(Globals & globals,
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const Strings & args, const Path & profile)
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{
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debug(format("installing derivations"));
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/* Get the set of user environment elements to be installed. */
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DrvInfos newElems, newElemsTmp;
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queryInstSources(*globals.state, globals.instSource, args, newElemsTmp, true);
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/* If --prebuilt-only is given, filter out source-only packages. */
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for (auto & i : newElemsTmp)
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if (!globals.prebuiltOnly || isPrebuilt(*globals.state, i))
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newElems.push_back(i);
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StringSet newNames;
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for (auto & i : newElems) {
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/* `forceName' is a hack to get package names right in some
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one-click installs, namely those where the name used in the
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path is not the one we want (e.g., `java-front' versus
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`java-front-0.9pre15899'). */
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if (globals.forceName != "")
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i.setName(globals.forceName);
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newNames.insert(DrvName(i.queryName()).name);
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}
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while (true) {
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string lockToken = optimisticLockProfile(profile);
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DrvInfos allElems(newElems);
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/* Add in the already installed derivations, unless they have
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the same name as a to-be-installed element. */
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if (!globals.removeAll) {
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DrvInfos installedElems = queryInstalled(*globals.state, profile);
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for (auto & i : installedElems) {
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DrvName drvName(i.queryName());
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if (!globals.preserveInstalled &&
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newNames.find(drvName.name) != newNames.end() &&
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!keep(i))
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printInfo("replacing old '%s'", i.queryName());
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else
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allElems.push_back(i);
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}
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for (auto & i : newElems)
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printInfo("installing '%s'", i.queryName());
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}
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printMissing(*globals.state, newElems);
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if (globals.dryRun) return;
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if (createUserEnv(*globals.state, allElems,
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profile, settings.envKeepDerivations, lockToken)) break;
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}
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}
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|
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static void opInstall(Globals & globals, Strings opFlags, Strings opArgs)
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{
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for (Strings::iterator i = opFlags.begin(); i != opFlags.end(); ) {
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string arg = *i++;
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if (parseInstallSourceOptions(globals, i, opFlags, arg)) ;
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else if (arg == "--preserve-installed" || arg == "-P")
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globals.preserveInstalled = true;
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else if (arg == "--remove-all" || arg == "-r")
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globals.removeAll = true;
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else throw UsageError(format("unknown flag '%1%'") % arg);
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}
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installDerivations(globals, opArgs, globals.profile);
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}
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typedef enum { utLt, utLeq, utEq, utAlways } UpgradeType;
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|
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static void upgradeDerivations(Globals & globals,
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const Strings & args, UpgradeType upgradeType)
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{
|
|
debug(format("upgrading derivations"));
|
|
|
|
/* Upgrade works as follows: we take all currently installed
|
|
derivations, and for any derivation matching any selector, look
|
|
for a derivation in the input Nix expression that has the same
|
|
name and a higher version number. */
|
|
|
|
while (true) {
|
|
string lockToken = optimisticLockProfile(globals.profile);
|
|
|
|
DrvInfos installedElems = queryInstalled(*globals.state, globals.profile);
|
|
|
|
/* Fetch all derivations from the input file. */
|
|
DrvInfos availElems;
|
|
queryInstSources(*globals.state, globals.instSource, args, availElems, false);
|
|
|
|
/* Go through all installed derivations. */
|
|
DrvInfos newElems;
|
|
for (auto & i : installedElems) {
|
|
DrvName drvName(i.queryName());
|
|
|
|
try {
|
|
|
|
if (keep(i)) {
|
|
newElems.push_back(i);
|
|
continue;
|
|
}
|
|
|
|
/* Find the derivation in the input Nix expression
|
|
with the same name that satisfies the version
|
|
constraints specified by upgradeType. If there are
|
|
multiple matches, take the one with the highest
|
|
priority. If there are still multiple matches,
|
|
take the one with the highest version.
|
|
Do not upgrade if it would decrease the priority. */
|
|
DrvInfos::iterator bestElem = availElems.end();
|
|
string bestVersion;
|
|
for (auto j = availElems.begin(); j != availElems.end(); ++j) {
|
|
if (comparePriorities(*globals.state, i, *j) > 0)
|
|
continue;
|
|
DrvName newName(j->queryName());
|
|
if (newName.name == drvName.name) {
|
|
int d = compareVersions(drvName.version, newName.version);
|
|
if ((upgradeType == utLt && d < 0) ||
|
|
(upgradeType == utLeq && d <= 0) ||
|
|
(upgradeType == utEq && d == 0) ||
|
|
upgradeType == utAlways)
|
|
{
|
|
int d2 = -1;
|
|
if (bestElem != availElems.end()) {
|
|
d2 = comparePriorities(*globals.state, *bestElem, *j);
|
|
if (d2 == 0) d2 = compareVersions(bestVersion, newName.version);
|
|
}
|
|
if (d2 < 0 && (!globals.prebuiltOnly || isPrebuilt(*globals.state, *j))) {
|
|
bestElem = j;
|
|
bestVersion = newName.version;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (bestElem != availElems.end() &&
|
|
i.queryOutPath() !=
|
|
bestElem->queryOutPath())
|
|
{
|
|
const char * action = compareVersions(drvName.version, bestVersion) <= 0
|
|
? "upgrading" : "downgrading";
|
|
printInfo("%1% '%2%' to '%3%'",
|
|
action, i.queryName(), bestElem->queryName());
|
|
newElems.push_back(*bestElem);
|
|
} else newElems.push_back(i);
|
|
|
|
} catch (Error & e) {
|
|
e.addPrefix(fmt("while trying to find an upgrade for '%s':\n", i.queryName()));
|
|
throw;
|
|
}
|
|
}
|
|
|
|
printMissing(*globals.state, newElems);
|
|
|
|
if (globals.dryRun) return;
|
|
|
|
if (createUserEnv(*globals.state, newElems,
|
|
globals.profile, settings.envKeepDerivations, lockToken)) break;
|
|
}
|
|
}
|
|
|
|
|
|
static void opUpgrade(Globals & globals, Strings opFlags, Strings opArgs)
|
|
{
|
|
UpgradeType upgradeType = utLt;
|
|
for (Strings::iterator i = opFlags.begin(); i != opFlags.end(); ) {
|
|
string arg = *i++;
|
|
if (parseInstallSourceOptions(globals, i, opFlags, arg)) ;
|
|
else if (arg == "--lt") upgradeType = utLt;
|
|
else if (arg == "--leq") upgradeType = utLeq;
|
|
else if (arg == "--eq") upgradeType = utEq;
|
|
else if (arg == "--always") upgradeType = utAlways;
|
|
else throw UsageError(format("unknown flag '%1%'") % arg);
|
|
}
|
|
|
|
upgradeDerivations(globals, opArgs, upgradeType);
|
|
}
|
|
|
|
|
|
static void setMetaFlag(EvalState & state, DrvInfo & drv,
|
|
const string & name, const string & value)
|
|
{
|
|
Value * v = state.allocValue();
|
|
mkString(*v, value.c_str());
|
|
drv.setMeta(name, v);
|
|
}
|
|
|
|
|
|
static void opSetFlag(Globals & globals, Strings opFlags, Strings opArgs)
|
|
{
|
|
if (opFlags.size() > 0)
|
|
throw UsageError(format("unknown flag '%1%'") % opFlags.front());
|
|
if (opArgs.size() < 2)
|
|
throw UsageError("not enough arguments to '--set-flag'");
|
|
|
|
Strings::iterator arg = opArgs.begin();
|
|
string flagName = *arg++;
|
|
string flagValue = *arg++;
|
|
DrvNames selectors = drvNamesFromArgs(Strings(arg, opArgs.end()));
|
|
|
|
while (true) {
|
|
string lockToken = optimisticLockProfile(globals.profile);
|
|
|
|
DrvInfos installedElems = queryInstalled(*globals.state, globals.profile);
|
|
|
|
/* Update all matching derivations. */
|
|
for (auto & i : installedElems) {
|
|
DrvName drvName(i.queryName());
|
|
for (auto & j : selectors)
|
|
if (j.matches(drvName)) {
|
|
printInfo("setting flag on '%1%'", i.queryName());
|
|
j.hits++;
|
|
setMetaFlag(*globals.state, i, flagName, flagValue);
|
|
break;
|
|
}
|
|
}
|
|
|
|
checkSelectorUse(selectors);
|
|
|
|
/* Write the new user environment. */
|
|
if (createUserEnv(*globals.state, installedElems,
|
|
globals.profile, settings.envKeepDerivations, lockToken)) break;
|
|
}
|
|
}
|
|
|
|
|
|
static void opSet(Globals & globals, Strings opFlags, Strings opArgs)
|
|
{
|
|
auto store2 = globals.state->store.dynamic_pointer_cast<LocalFSStore>();
|
|
if (!store2) throw Error("--set is not supported for this Nix store");
|
|
|
|
for (Strings::iterator i = opFlags.begin(); i != opFlags.end(); ) {
|
|
string arg = *i++;
|
|
if (parseInstallSourceOptions(globals, i, opFlags, arg)) ;
|
|
else throw UsageError(format("unknown flag '%1%'") % arg);
|
|
}
|
|
|
|
DrvInfos elems;
|
|
queryInstSources(*globals.state, globals.instSource, opArgs, elems, true);
|
|
|
|
if (elems.size() != 1)
|
|
throw Error("--set requires exactly one derivation");
|
|
|
|
DrvInfo & drv(elems.front());
|
|
|
|
if (globals.forceName != "")
|
|
drv.setName(globals.forceName);
|
|
|
|
if (drv.queryDrvPath() != "") {
|
|
PathSet paths = {drv.queryDrvPath()};
|
|
printMissing(globals.state->store, paths);
|
|
if (globals.dryRun) return;
|
|
globals.state->store->buildPaths(paths, globals.state->repair ? bmRepair : bmNormal);
|
|
}
|
|
else {
|
|
printMissing(globals.state->store, {drv.queryOutPath()});
|
|
if (globals.dryRun) return;
|
|
globals.state->store->ensurePath(drv.queryOutPath());
|
|
}
|
|
|
|
debug(format("switching to new user environment"));
|
|
Path generation = createGeneration(ref<LocalFSStore>(store2), globals.profile, drv.queryOutPath());
|
|
switchLink(globals.profile, generation);
|
|
}
|
|
|
|
|
|
static void uninstallDerivations(Globals & globals, Strings & selectors,
|
|
Path & profile)
|
|
{
|
|
while (true) {
|
|
string lockToken = optimisticLockProfile(profile);
|
|
|
|
DrvInfos installedElems = queryInstalled(*globals.state, profile);
|
|
DrvInfos newElems;
|
|
|
|
for (auto & i : installedElems) {
|
|
DrvName drvName(i.queryName());
|
|
bool found = false;
|
|
for (auto & j : selectors)
|
|
/* !!! the repeated calls to followLinksToStorePath()
|
|
are expensive, should pre-compute them. */
|
|
if ((isPath(j) && i.queryOutPath() == globals.state->store->followLinksToStorePath(j))
|
|
|| DrvName(j).matches(drvName))
|
|
{
|
|
printInfo("uninstalling '%s'", i.queryName());
|
|
found = true;
|
|
break;
|
|
}
|
|
if (!found) newElems.push_back(i);
|
|
}
|
|
|
|
if (globals.dryRun) return;
|
|
|
|
if (createUserEnv(*globals.state, newElems,
|
|
profile, settings.envKeepDerivations, lockToken)) break;
|
|
}
|
|
}
|
|
|
|
|
|
static void opUninstall(Globals & globals, Strings opFlags, Strings opArgs)
|
|
{
|
|
if (opFlags.size() > 0)
|
|
throw UsageError(format("unknown flag '%1%'") % opFlags.front());
|
|
uninstallDerivations(globals, opArgs, globals.profile);
|
|
}
|
|
|
|
|
|
static bool cmpChars(char a, char b)
|
|
{
|
|
return toupper(a) < toupper(b);
|
|
}
|
|
|
|
|
|
static bool cmpElemByName(const DrvInfo & a, const DrvInfo & b)
|
|
{
|
|
auto a_name = a.queryName();
|
|
auto b_name = b.queryName();
|
|
return lexicographical_compare(
|
|
a_name.begin(), a_name.end(),
|
|
b_name.begin(), b_name.end(), cmpChars);
|
|
}
|
|
|
|
|
|
typedef list<Strings> Table;
|
|
|
|
|
|
void printTable(Table & table)
|
|
{
|
|
unsigned int nrColumns = table.size() > 0 ? table.front().size() : 0;
|
|
|
|
vector<unsigned int> widths;
|
|
widths.resize(nrColumns);
|
|
|
|
for (auto & i : table) {
|
|
assert(i.size() == nrColumns);
|
|
Strings::iterator j;
|
|
unsigned int column;
|
|
for (j = i.begin(), column = 0; j != i.end(); ++j, ++column)
|
|
if (j->size() > widths[column]) widths[column] = j->size();
|
|
}
|
|
|
|
for (auto & i : table) {
|
|
Strings::iterator j;
|
|
unsigned int column;
|
|
for (j = i.begin(), column = 0; j != i.end(); ++j, ++column) {
|
|
string s = *j;
|
|
replace(s.begin(), s.end(), '\n', ' ');
|
|
cout << s;
|
|
if (column < nrColumns - 1)
|
|
cout << string(widths[column] - s.size() + 2, ' ');
|
|
}
|
|
cout << std::endl;
|
|
}
|
|
}
|
|
|
|
|
|
/* This function compares the version of an element against the
|
|
versions in the given set of elements. `cvLess' means that only
|
|
lower versions are in the set, `cvEqual' means that at most an
|
|
equal version is in the set, and `cvGreater' means that there is at
|
|
least one element with a higher version in the set. `cvUnavail'
|
|
means that there are no elements with the same name in the set. */
|
|
|
|
typedef enum { cvLess, cvEqual, cvGreater, cvUnavail } VersionDiff;
|
|
|
|
static VersionDiff compareVersionAgainstSet(
|
|
const DrvInfo & elem, const DrvInfos & elems, string & version)
|
|
{
|
|
DrvName name(elem.queryName());
|
|
|
|
VersionDiff diff = cvUnavail;
|
|
version = "?";
|
|
|
|
for (auto & i : elems) {
|
|
DrvName name2(i.queryName());
|
|
if (name.name == name2.name) {
|
|
int d = compareVersions(name.version, name2.version);
|
|
if (d < 0) {
|
|
diff = cvGreater;
|
|
version = name2.version;
|
|
}
|
|
else if (diff != cvGreater && d == 0) {
|
|
diff = cvEqual;
|
|
version = name2.version;
|
|
}
|
|
else if (diff != cvGreater && diff != cvEqual && d > 0) {
|
|
diff = cvLess;
|
|
if (version == "" || compareVersions(version, name2.version) < 0)
|
|
version = name2.version;
|
|
}
|
|
}
|
|
}
|
|
|
|
return diff;
|
|
}
|
|
|
|
|
|
static void queryJSON(Globals & globals, vector<DrvInfo> & elems)
|
|
{
|
|
JSONObject topObj(cout, true);
|
|
for (auto & i : elems) {
|
|
JSONObject pkgObj = topObj.object(i.attrPath);
|
|
|
|
pkgObj.attr("name", i.queryName());
|
|
pkgObj.attr("system", i.querySystem());
|
|
|
|
JSONObject metaObj = pkgObj.object("meta");
|
|
StringSet metaNames = i.queryMetaNames();
|
|
for (auto & j : metaNames) {
|
|
auto placeholder = metaObj.placeholder(j);
|
|
Value * v = i.queryMeta(j);
|
|
if (!v) {
|
|
printError("derivation '%s' has invalid meta attribute '%s'", i.queryName(), j);
|
|
placeholder.write(nullptr);
|
|
} else {
|
|
PathSet context;
|
|
printValueAsJSON(*globals.state, true, *v, placeholder, context);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static void opQuery(Globals & globals, Strings opFlags, Strings opArgs)
|
|
{
|
|
Strings remaining;
|
|
string attrPath;
|
|
|
|
bool printStatus = false;
|
|
bool printName = true;
|
|
bool printAttrPath = false;
|
|
bool printSystem = false;
|
|
bool printDrvPath = false;
|
|
bool printOutPath = false;
|
|
bool printDescription = false;
|
|
bool printMeta = false;
|
|
bool compareVersions = false;
|
|
bool xmlOutput = false;
|
|
bool jsonOutput = false;
|
|
|
|
enum { sInstalled, sAvailable } source = sInstalled;
|
|
|
|
settings.readOnlyMode = true; /* makes evaluation a bit faster */
|
|
|
|
for (Strings::iterator i = opFlags.begin(); i != opFlags.end(); ) {
|
|
string arg = *i++;
|
|
if (arg == "--status" || arg == "-s") printStatus = true;
|
|
else if (arg == "--no-name") printName = false;
|
|
else if (arg == "--system") printSystem = true;
|
|
else if (arg == "--description") printDescription = true;
|
|
else if (arg == "--compare-versions" || arg == "-c") compareVersions = true;
|
|
else if (arg == "--drv-path") printDrvPath = true;
|
|
else if (arg == "--out-path") printOutPath = true;
|
|
else if (arg == "--meta") printMeta = true;
|
|
else if (arg == "--installed") source = sInstalled;
|
|
else if (arg == "--available" || arg == "-a") source = sAvailable;
|
|
else if (arg == "--xml") xmlOutput = true;
|
|
else if (arg == "--json") jsonOutput = true;
|
|
else if (arg == "--attr-path" || arg == "-P") printAttrPath = true;
|
|
else if (arg == "--attr" || arg == "-A")
|
|
attrPath = needArg(i, opFlags, arg);
|
|
else
|
|
throw UsageError(format("unknown flag '%1%'") % arg);
|
|
}
|
|
|
|
|
|
/* Obtain derivation information from the specified source. */
|
|
DrvInfos availElems, installedElems;
|
|
|
|
if (source == sInstalled || compareVersions || printStatus)
|
|
installedElems = queryInstalled(*globals.state, globals.profile);
|
|
|
|
if (source == sAvailable || compareVersions)
|
|
loadDerivations(*globals.state, globals.instSource.nixExprPath,
|
|
globals.instSource.systemFilter, *globals.instSource.autoArgs,
|
|
attrPath, availElems);
|
|
|
|
DrvInfos elems_ = filterBySelector(*globals.state,
|
|
source == sInstalled ? installedElems : availElems,
|
|
opArgs, false);
|
|
|
|
DrvInfos & otherElems(source == sInstalled ? availElems : installedElems);
|
|
|
|
|
|
/* Sort them by name. */
|
|
/* !!! */
|
|
vector<DrvInfo> elems;
|
|
for (auto & i : elems_) elems.push_back(i);
|
|
sort(elems.begin(), elems.end(), cmpElemByName);
|
|
|
|
|
|
/* We only need to know the installed paths when we are querying
|
|
the status of the derivation. */
|
|
PathSet installed; /* installed paths */
|
|
|
|
if (printStatus) {
|
|
for (auto & i : installedElems)
|
|
installed.insert(i.queryOutPath());
|
|
}
|
|
|
|
|
|
/* Query which paths have substitutes. */
|
|
PathSet validPaths, substitutablePaths;
|
|
if (printStatus || globals.prebuiltOnly) {
|
|
PathSet paths;
|
|
for (auto & i : elems)
|
|
try {
|
|
paths.insert(i.queryOutPath());
|
|
} catch (AssertionError & e) {
|
|
printMsg(lvlTalkative, "skipping derivation named '%s' which gives an assertion failure", i.queryName());
|
|
i.setFailed();
|
|
}
|
|
validPaths = globals.state->store->queryValidPaths(paths);
|
|
substitutablePaths = globals.state->store->querySubstitutablePaths(paths);
|
|
}
|
|
|
|
|
|
/* Print the desired columns, or XML output. */
|
|
if (jsonOutput) {
|
|
queryJSON(globals, elems);
|
|
return;
|
|
}
|
|
|
|
bool tty = isatty(STDOUT_FILENO);
|
|
RunPager pager;
|
|
|
|
Table table;
|
|
std::ostringstream dummy;
|
|
XMLWriter xml(true, *(xmlOutput ? &cout : &dummy));
|
|
XMLOpenElement xmlRoot(xml, "items");
|
|
|
|
for (auto & i : elems) {
|
|
try {
|
|
if (i.hasFailed()) continue;
|
|
|
|
//Activity act(*logger, lvlDebug, format("outputting query result '%1%'") % i.attrPath);
|
|
|
|
if (globals.prebuiltOnly &&
|
|
validPaths.find(i.queryOutPath()) == validPaths.end() &&
|
|
substitutablePaths.find(i.queryOutPath()) == substitutablePaths.end())
|
|
continue;
|
|
|
|
/* For table output. */
|
|
Strings columns;
|
|
|
|
/* For XML output. */
|
|
XMLAttrs attrs;
|
|
|
|
if (printStatus) {
|
|
Path outPath = i.queryOutPath();
|
|
bool hasSubs = substitutablePaths.find(outPath) != substitutablePaths.end();
|
|
bool isInstalled = installed.find(outPath) != installed.end();
|
|
bool isValid = validPaths.find(outPath) != validPaths.end();
|
|
if (xmlOutput) {
|
|
attrs["installed"] = isInstalled ? "1" : "0";
|
|
attrs["valid"] = isValid ? "1" : "0";
|
|
attrs["substitutable"] = hasSubs ? "1" : "0";
|
|
} else
|
|
columns.push_back(
|
|
(string) (isInstalled ? "I" : "-")
|
|
+ (isValid ? "P" : "-")
|
|
+ (hasSubs ? "S" : "-"));
|
|
}
|
|
|
|
if (xmlOutput)
|
|
attrs["attrPath"] = i.attrPath;
|
|
else if (printAttrPath)
|
|
columns.push_back(i.attrPath);
|
|
|
|
if (xmlOutput)
|
|
attrs["name"] = i.queryName();
|
|
else if (printName)
|
|
columns.push_back(i.queryName());
|
|
|
|
if (compareVersions) {
|
|
/* Compare this element against the versions of the
|
|
same named packages in either the set of available
|
|
elements, or the set of installed elements. !!!
|
|
This is O(N * M), should be O(N * lg M). */
|
|
string version;
|
|
VersionDiff diff = compareVersionAgainstSet(i, otherElems, version);
|
|
|
|
char ch;
|
|
switch (diff) {
|
|
case cvLess: ch = '>'; break;
|
|
case cvEqual: ch = '='; break;
|
|
case cvGreater: ch = '<'; break;
|
|
case cvUnavail: ch = '-'; break;
|
|
default: abort();
|
|
}
|
|
|
|
if (xmlOutput) {
|
|
if (diff != cvUnavail) {
|
|
attrs["versionDiff"] = ch;
|
|
attrs["maxComparedVersion"] = version;
|
|
}
|
|
} else {
|
|
string column = (string) "" + ch + " " + version;
|
|
if (diff == cvGreater && tty)
|
|
column = ANSI_RED + column + ANSI_NORMAL;
|
|
columns.push_back(column);
|
|
}
|
|
}
|
|
|
|
if (xmlOutput) {
|
|
if (i.querySystem() != "") attrs["system"] = i.querySystem();
|
|
}
|
|
else if (printSystem)
|
|
columns.push_back(i.querySystem());
|
|
|
|
if (printDrvPath) {
|
|
string drvPath = i.queryDrvPath();
|
|
if (xmlOutput) {
|
|
if (drvPath != "") attrs["drvPath"] = drvPath;
|
|
} else
|
|
columns.push_back(drvPath == "" ? "-" : drvPath);
|
|
}
|
|
|
|
if (printOutPath && !xmlOutput) {
|
|
DrvInfo::Outputs outputs = i.queryOutputs();
|
|
string s;
|
|
for (auto & j : outputs) {
|
|
if (!s.empty()) s += ';';
|
|
if (j.first != "out") { s += j.first; s += "="; }
|
|
s += j.second;
|
|
}
|
|
columns.push_back(s);
|
|
}
|
|
|
|
if (printDescription) {
|
|
string descr = i.queryMetaString("description");
|
|
if (xmlOutput) {
|
|
if (descr != "") attrs["description"] = descr;
|
|
} else
|
|
columns.push_back(descr);
|
|
}
|
|
|
|
if (xmlOutput) {
|
|
if (printOutPath || printMeta) {
|
|
XMLOpenElement item(xml, "item", attrs);
|
|
if (printOutPath) {
|
|
DrvInfo::Outputs outputs = i.queryOutputs();
|
|
for (auto & j : outputs) {
|
|
XMLAttrs attrs2;
|
|
attrs2["name"] = j.first;
|
|
attrs2["path"] = j.second;
|
|
xml.writeEmptyElement("output", attrs2);
|
|
}
|
|
}
|
|
if (printMeta) {
|
|
StringSet metaNames = i.queryMetaNames();
|
|
for (auto & j : metaNames) {
|
|
XMLAttrs attrs2;
|
|
attrs2["name"] = j;
|
|
Value * v = i.queryMeta(j);
|
|
if (!v)
|
|
printError("derivation '%s' has invalid meta attribute '%s'", i.queryName(), j);
|
|
else {
|
|
if (v->type == tString) {
|
|
attrs2["type"] = "string";
|
|
attrs2["value"] = v->string.s;
|
|
xml.writeEmptyElement("meta", attrs2);
|
|
} else if (v->type == tInt) {
|
|
attrs2["type"] = "int";
|
|
attrs2["value"] = (format("%1%") % v->integer).str();
|
|
xml.writeEmptyElement("meta", attrs2);
|
|
} else if (v->type == tFloat) {
|
|
attrs2["type"] = "float";
|
|
attrs2["value"] = (format("%1%") % v->fpoint).str();
|
|
xml.writeEmptyElement("meta", attrs2);
|
|
} else if (v->type == tBool) {
|
|
attrs2["type"] = "bool";
|
|
attrs2["value"] = v->boolean ? "true" : "false";
|
|
xml.writeEmptyElement("meta", attrs2);
|
|
} else if (v->isList()) {
|
|
attrs2["type"] = "strings";
|
|
XMLOpenElement m(xml, "meta", attrs2);
|
|
for (unsigned int j = 0; j < v->listSize(); ++j) {
|
|
if (v->listElems()[j]->type != tString) continue;
|
|
XMLAttrs attrs3;
|
|
attrs3["value"] = v->listElems()[j]->string.s;
|
|
xml.writeEmptyElement("string", attrs3);
|
|
}
|
|
} else if (v->type == tAttrs) {
|
|
attrs2["type"] = "strings";
|
|
XMLOpenElement m(xml, "meta", attrs2);
|
|
Bindings & attrs = *v->attrs;
|
|
for (auto &i : attrs) {
|
|
Attr & a(*attrs.find(i.name));
|
|
if(a.value->type != tString) continue;
|
|
XMLAttrs attrs3;
|
|
attrs3["type"] = i.name;
|
|
attrs3["value"] = a.value->string.s;
|
|
xml.writeEmptyElement("string", attrs3);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else
|
|
xml.writeEmptyElement("item", attrs);
|
|
} else
|
|
table.push_back(columns);
|
|
|
|
cout.flush();
|
|
|
|
} catch (AssertionError & e) {
|
|
printMsg(lvlTalkative, "skipping derivation named '%1%' which gives an assertion failure", i.queryName());
|
|
} catch (Error & e) {
|
|
e.addPrefix(fmt("while querying the derivation named '%1%':\n", i.queryName()));
|
|
throw;
|
|
}
|
|
}
|
|
|
|
if (!xmlOutput) printTable(table);
|
|
}
|
|
|
|
|
|
static void opSwitchProfile(Globals & globals, Strings opFlags, Strings opArgs)
|
|
{
|
|
if (opFlags.size() > 0)
|
|
throw UsageError(format("unknown flag '%1%'") % opFlags.front());
|
|
if (opArgs.size() != 1)
|
|
throw UsageError(format("exactly one argument expected"));
|
|
|
|
Path profile = absPath(opArgs.front());
|
|
Path profileLink = getHome() + "/.nix-profile";
|
|
|
|
switchLink(profileLink, profile);
|
|
}
|
|
|
|
|
|
static const int prevGen = -2;
|
|
|
|
|
|
static void switchGeneration(Globals & globals, int dstGen)
|
|
{
|
|
PathLocks lock;
|
|
lockProfile(lock, globals.profile);
|
|
|
|
int curGen;
|
|
Generations gens = findGenerations(globals.profile, curGen);
|
|
|
|
Generation dst;
|
|
for (auto & i : gens)
|
|
if ((dstGen == prevGen && i.number < curGen) ||
|
|
(dstGen >= 0 && i.number == dstGen))
|
|
dst = i;
|
|
|
|
if (!dst) {
|
|
if (dstGen == prevGen)
|
|
throw Error(format("no generation older than the current (%1%) exists")
|
|
% curGen);
|
|
else
|
|
throw Error(format("generation %1% does not exist") % dstGen);
|
|
}
|
|
|
|
printInfo(format("switching from generation %1% to %2%")
|
|
% curGen % dst.number);
|
|
|
|
if (globals.dryRun) return;
|
|
|
|
switchLink(globals.profile, dst.path);
|
|
}
|
|
|
|
|
|
static void opSwitchGeneration(Globals & globals, Strings opFlags, Strings opArgs)
|
|
{
|
|
if (opFlags.size() > 0)
|
|
throw UsageError(format("unknown flag '%1%'") % opFlags.front());
|
|
if (opArgs.size() != 1)
|
|
throw UsageError(format("exactly one argument expected"));
|
|
|
|
int dstGen;
|
|
if (!string2Int(opArgs.front(), dstGen))
|
|
throw UsageError(format("expected a generation number"));
|
|
|
|
switchGeneration(globals, dstGen);
|
|
}
|
|
|
|
|
|
static void opRollback(Globals & globals, Strings opFlags, Strings opArgs)
|
|
{
|
|
if (opFlags.size() > 0)
|
|
throw UsageError(format("unknown flag '%1%'") % opFlags.front());
|
|
if (opArgs.size() != 0)
|
|
throw UsageError(format("no arguments expected"));
|
|
|
|
switchGeneration(globals, prevGen);
|
|
}
|
|
|
|
|
|
static void opListGenerations(Globals & globals, Strings opFlags, Strings opArgs)
|
|
{
|
|
if (opFlags.size() > 0)
|
|
throw UsageError(format("unknown flag '%1%'") % opFlags.front());
|
|
if (opArgs.size() != 0)
|
|
throw UsageError(format("no arguments expected"));
|
|
|
|
PathLocks lock;
|
|
lockProfile(lock, globals.profile);
|
|
|
|
int curGen;
|
|
Generations gens = findGenerations(globals.profile, curGen);
|
|
|
|
RunPager pager;
|
|
|
|
for (auto & i : gens) {
|
|
tm t;
|
|
if (!localtime_r(&i.creationTime, &t)) throw Error("cannot convert time");
|
|
cout << format("%|4| %|4|-%|02|-%|02| %|02|:%|02|:%|02| %||\n")
|
|
% i.number
|
|
% (t.tm_year + 1900) % (t.tm_mon + 1) % t.tm_mday
|
|
% t.tm_hour % t.tm_min % t.tm_sec
|
|
% (i.number == curGen ? "(current)" : "");
|
|
}
|
|
}
|
|
|
|
|
|
static void opDeleteGenerations(Globals & globals, Strings opFlags, Strings opArgs)
|
|
{
|
|
if (opFlags.size() > 0)
|
|
throw UsageError(format("unknown flag '%1%'") % opFlags.front());
|
|
|
|
if (opArgs.size() == 1 && opArgs.front() == "old") {
|
|
deleteOldGenerations(globals.profile, globals.dryRun);
|
|
} else if (opArgs.size() == 1 && opArgs.front().find('d') != string::npos) {
|
|
deleteGenerationsOlderThan(globals.profile, opArgs.front(), globals.dryRun);
|
|
} else {
|
|
std::set<unsigned int> gens;
|
|
for (auto & i : opArgs) {
|
|
unsigned int n;
|
|
if (!string2Int(i, n))
|
|
throw UsageError(format("invalid generation number '%1%'") % i);
|
|
gens.insert(n);
|
|
}
|
|
deleteGenerations(globals.profile, gens, globals.dryRun);
|
|
}
|
|
}
|
|
|
|
|
|
static void opVersion(Globals & globals, Strings opFlags, Strings opArgs)
|
|
{
|
|
printVersion("nix-env");
|
|
}
|
|
|
|
|
|
int main(int argc, char * * argv)
|
|
{
|
|
return handleExceptions(argv[0], [&]() {
|
|
initNix();
|
|
initGC();
|
|
|
|
Strings opFlags, opArgs;
|
|
Operation op = 0;
|
|
RepairFlag repair = NoRepair;
|
|
string file;
|
|
|
|
Globals globals;
|
|
|
|
globals.instSource.type = srcUnknown;
|
|
globals.instSource.nixExprPath = getDefNixExprPath();
|
|
globals.instSource.systemFilter = "*";
|
|
|
|
globals.dryRun = false;
|
|
globals.preserveInstalled = false;
|
|
globals.removeAll = false;
|
|
globals.prebuiltOnly = false;
|
|
|
|
struct MyArgs : LegacyArgs, MixEvalArgs
|
|
{
|
|
using LegacyArgs::LegacyArgs;
|
|
};
|
|
|
|
MyArgs myArgs(baseNameOf(argv[0]), [&](Strings::iterator & arg, const Strings::iterator & end) {
|
|
Operation oldOp = op;
|
|
|
|
if (*arg == "--help")
|
|
showManPage("nix-env");
|
|
else if (*arg == "--version")
|
|
op = opVersion;
|
|
else if (*arg == "--install" || *arg == "-i")
|
|
op = opInstall;
|
|
else if (*arg == "--force-name") // undocumented flag for nix-install-package
|
|
globals.forceName = getArg(*arg, arg, end);
|
|
else if (*arg == "--uninstall" || *arg == "-e")
|
|
op = opUninstall;
|
|
else if (*arg == "--upgrade" || *arg == "-u")
|
|
op = opUpgrade;
|
|
else if (*arg == "--set-flag")
|
|
op = opSetFlag;
|
|
else if (*arg == "--set")
|
|
op = opSet;
|
|
else if (*arg == "--query" || *arg == "-q")
|
|
op = opQuery;
|
|
else if (*arg == "--profile" || *arg == "-p")
|
|
globals.profile = absPath(getArg(*arg, arg, end));
|
|
else if (*arg == "--file" || *arg == "-f")
|
|
file = getArg(*arg, arg, end);
|
|
else if (*arg == "--switch-profile" || *arg == "-S")
|
|
op = opSwitchProfile;
|
|
else if (*arg == "--switch-generation" || *arg == "-G")
|
|
op = opSwitchGeneration;
|
|
else if (*arg == "--rollback")
|
|
op = opRollback;
|
|
else if (*arg == "--list-generations")
|
|
op = opListGenerations;
|
|
else if (*arg == "--delete-generations")
|
|
op = opDeleteGenerations;
|
|
else if (*arg == "--dry-run") {
|
|
printInfo("(dry run; not doing anything)");
|
|
globals.dryRun = true;
|
|
}
|
|
else if (*arg == "--system-filter")
|
|
globals.instSource.systemFilter = getArg(*arg, arg, end);
|
|
else if (*arg == "--prebuilt-only" || *arg == "-b")
|
|
globals.prebuiltOnly = true;
|
|
else if (*arg == "--repair")
|
|
repair = Repair;
|
|
else if (*arg != "" && arg->at(0) == '-') {
|
|
opFlags.push_back(*arg);
|
|
/* FIXME: hacky */
|
|
if (*arg == "--from-profile" ||
|
|
(op == opQuery && (*arg == "--attr" || *arg == "-A")))
|
|
opFlags.push_back(getArg(*arg, arg, end));
|
|
}
|
|
else
|
|
opArgs.push_back(*arg);
|
|
|
|
if (oldOp && oldOp != op)
|
|
throw UsageError("only one operation may be specified");
|
|
|
|
return true;
|
|
});
|
|
|
|
myArgs.parseCmdline(argvToStrings(argc, argv));
|
|
|
|
if (!op) throw UsageError("no operation specified");
|
|
|
|
auto store = openStore();
|
|
|
|
globals.state = std::shared_ptr<EvalState>(new EvalState(myArgs.searchPath, store));
|
|
globals.state->repair = repair;
|
|
|
|
if (file != "")
|
|
globals.instSource.nixExprPath = lookupFileArg(*globals.state, file);
|
|
|
|
globals.instSource.autoArgs = myArgs.getAutoArgs(*globals.state);
|
|
|
|
if (globals.profile == "")
|
|
globals.profile = getEnv("NIX_PROFILE", "");
|
|
|
|
if (globals.profile == "") {
|
|
Path profileLink = getHome() + "/.nix-profile";
|
|
globals.profile = pathExists(profileLink)
|
|
? absPath(readLink(profileLink), dirOf(profileLink))
|
|
: canonPath(settings.nixStateDir + "/profiles/default");
|
|
}
|
|
|
|
op(globals, opFlags, opArgs);
|
|
|
|
globals.state->printStats();
|
|
});
|
|
}
|