forked from lix-project/lix
nix repl: add :edit command
This allows to have a repl-centric workflow to working on nixpkgs. Usage: :edit <package> - heuristic that find the package file path :edit <path> - just open the editor on the file path Once invoked, `nix repl` will open $EDITOR on that file path. Once the editor exits, `nix repl` will automatically reload itself.
This commit is contained in:
parent
389a2cebed
commit
73ff84f6a8
|
@ -22,6 +22,7 @@ extern "C" {
|
||||||
#include "shared.hh"
|
#include "shared.hh"
|
||||||
#include "eval.hh"
|
#include "eval.hh"
|
||||||
#include "eval-inline.hh"
|
#include "eval-inline.hh"
|
||||||
|
#include "attr-path.hh"
|
||||||
#include "store-api.hh"
|
#include "store-api.hh"
|
||||||
#include "common-eval-args.hh"
|
#include "common-eval-args.hh"
|
||||||
#include "get-drvs.hh"
|
#include "get-drvs.hh"
|
||||||
|
@ -440,6 +441,7 @@ bool NixRepl::processLine(string line)
|
||||||
<< " <x> = <expr> Bind expression to variable\n"
|
<< " <x> = <expr> Bind expression to variable\n"
|
||||||
<< " :a <expr> Add attributes from resulting set to scope\n"
|
<< " :a <expr> Add attributes from resulting set to scope\n"
|
||||||
<< " :b <expr> Build derivation\n"
|
<< " :b <expr> Build derivation\n"
|
||||||
|
<< " :e <expr> Open the derivation in $EDITOR\n"
|
||||||
<< " :i <expr> Build derivation, then install result into current profile\n"
|
<< " :i <expr> Build derivation, then install result into current profile\n"
|
||||||
<< " :l <path> Load Nix expression and add it to scope\n"
|
<< " :l <path> Load Nix expression and add it to scope\n"
|
||||||
<< " :p <expr> Evaluate and print expression recursively\n"
|
<< " :p <expr> Evaluate and print expression recursively\n"
|
||||||
|
@ -466,6 +468,61 @@ bool NixRepl::processLine(string line)
|
||||||
reloadFiles();
|
reloadFiles();
|
||||||
}
|
}
|
||||||
|
|
||||||
|
else if (command == ":e" || command == ":edit") {
|
||||||
|
Value v;
|
||||||
|
evalString(arg, v);
|
||||||
|
|
||||||
|
std::string filename;
|
||||||
|
int lineno = 0;
|
||||||
|
|
||||||
|
if (v.type == tPath || v.type == tString) {
|
||||||
|
PathSet context;
|
||||||
|
filename = state.coerceToString(noPos, v, context);
|
||||||
|
lineno = 0;
|
||||||
|
} else {
|
||||||
|
// assume it's a derivation
|
||||||
|
Value * v2;
|
||||||
|
try {
|
||||||
|
auto dummyArgs = state.allocBindings(0);
|
||||||
|
v2 = findAlongAttrPath(state, "meta.position", *dummyArgs, v);
|
||||||
|
} catch (Error &) {
|
||||||
|
throw Error("package '%s' has no source location information", arg);
|
||||||
|
}
|
||||||
|
|
||||||
|
auto pos = state.forceString(*v2);
|
||||||
|
debug("position is %s", pos);
|
||||||
|
|
||||||
|
auto colon = pos.rfind(':');
|
||||||
|
if (colon == std::string::npos)
|
||||||
|
throw Error("cannot parse meta.position attribute '%s'", pos);
|
||||||
|
|
||||||
|
filename = std::string(pos, 0, colon);
|
||||||
|
try {
|
||||||
|
lineno = std::stoi(std::string(pos, colon + 1));
|
||||||
|
} catch (std::invalid_argument & e) {
|
||||||
|
throw Error("cannot parse line number '%s'", pos);
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
// Open in EDITOR
|
||||||
|
auto editor = getEnv("EDITOR", "cat");
|
||||||
|
auto args = tokenizeString<Strings>(editor);
|
||||||
|
if (lineno > 0 && (
|
||||||
|
editor.find("emacs") != std::string::npos ||
|
||||||
|
editor.find("nano") != std::string::npos ||
|
||||||
|
editor.find("vim") != std::string::npos))
|
||||||
|
args.push_back(fmt("+%d", lineno));
|
||||||
|
args.push_back(filename);
|
||||||
|
editor = args.front();
|
||||||
|
args.pop_front();
|
||||||
|
runProgram(editor, args);
|
||||||
|
|
||||||
|
// Reload right after exiting the editor
|
||||||
|
state.resetFileCache();
|
||||||
|
reloadFiles();
|
||||||
|
}
|
||||||
|
|
||||||
else if (command == ":t") {
|
else if (command == ":t") {
|
||||||
Value v;
|
Value v;
|
||||||
evalString(arg, v);
|
evalString(arg, v);
|
||||||
|
|
Loading…
Reference in a new issue