forked from lix-project/lix
Add fetchTree builtin function
This allows all supported fetchers to be used, e.g. builtins.fetchTree { type = "github"; owner = "NixOS"; repo = "nix"; rev = "d4df99a3349cf2228a8ee78dea320afef86eb3ba"; }
This commit is contained in:
parent
d4df99a334
commit
26dacc0983
61
src/libexpr/primops/fetchTree.cc
Normal file
61
src/libexpr/primops/fetchTree.cc
Normal file
|
@ -0,0 +1,61 @@
|
|||
#include "primops.hh"
|
||||
#include "eval-inline.hh"
|
||||
#include "store-api.hh"
|
||||
#include "fetchers/fetchers.hh"
|
||||
#include "fetchers/registry.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
static void prim_fetchTree(EvalState & state, const Pos & pos, Value * * args, Value & v)
|
||||
{
|
||||
std::shared_ptr<const fetchers::Input> input;
|
||||
PathSet context;
|
||||
|
||||
state.forceValue(*args[0]);
|
||||
|
||||
if (args[0]->type == tAttrs) {
|
||||
state.forceAttrs(*args[0], pos);
|
||||
|
||||
fetchers::Input::Attrs attrs;
|
||||
|
||||
for (auto & attr : *args[0]->attrs) {
|
||||
state.forceValue(*attr.value);
|
||||
if (attr.value->type == tString)
|
||||
attrs.emplace(attr.name, attr.value->string.s);
|
||||
else
|
||||
throw Error("unsupported attribute type");
|
||||
}
|
||||
|
||||
if (!attrs.count("type"))
|
||||
throw Error("attribute 'type' is missing in call to 'fetchTree', at %s", pos);
|
||||
|
||||
input = fetchers::inputFromAttrs(attrs);
|
||||
} else
|
||||
input = fetchers::inputFromURL(state.coerceToString(pos, *args[0], context, false, false));
|
||||
|
||||
if (!evalSettings.pureEval && !input->isDirect())
|
||||
input = lookupInRegistries(state.store, input);
|
||||
|
||||
if (evalSettings.pureEval && !input->isImmutable())
|
||||
throw Error("in pure evaluation mode, 'fetchTree' requires an immutable input");
|
||||
|
||||
auto [tree, input2] = input->fetchTree(state.store);
|
||||
|
||||
state.mkAttrs(v, 8);
|
||||
auto storePath = state.store->printStorePath(tree.storePath);
|
||||
mkString(*state.allocAttr(v, state.sOutPath), storePath, PathSet({storePath}));
|
||||
if (input2->getRev()) {
|
||||
mkString(*state.allocAttr(v, state.symbols.create("rev")), input2->getRev()->gitRev());
|
||||
mkString(*state.allocAttr(v, state.symbols.create("shortRev")), input2->getRev()->gitShortRev());
|
||||
}
|
||||
if (tree.info.revCount)
|
||||
mkInt(*state.allocAttr(v, state.symbols.create("revCount")), *tree.info.revCount);
|
||||
v.attrs->sort();
|
||||
|
||||
if (state.allowedPaths)
|
||||
state.allowedPaths->insert(tree.actualPath);
|
||||
}
|
||||
|
||||
static RegisterPrimOp r("fetchTree", 1, prim_fetchTree);
|
||||
|
||||
}
|
|
@ -10,6 +10,8 @@ mkdir -p $tarroot
|
|||
cp dependencies.nix $tarroot/default.nix
|
||||
cp config.nix dependencies.builder*.sh $tarroot/
|
||||
|
||||
hash=$(nix hash-path $tarroot)
|
||||
|
||||
test_tarball() {
|
||||
local ext="$1"
|
||||
local compressor="$2"
|
||||
|
@ -25,6 +27,10 @@ test_tarball() {
|
|||
|
||||
nix-build -o $TEST_ROOT/result -E "import (fetchTarball file://$tarball)"
|
||||
|
||||
nix-build -o $TEST_ROOT/result -E "import (fetchTree file://$tarball)"
|
||||
nix-build -o $TEST_ROOT/result -E "import (fetchTree { type = \"tarball\"; url = file://$tarball; })"
|
||||
nix-build -o $TEST_ROOT/result -E "import (fetchTree { type = \"tarball\"; url = file://$tarball; narHash = \"$hash\"; })"
|
||||
|
||||
nix-instantiate --eval -E '1 + 2' -I fnord=file://no-such-tarball.tar$ext
|
||||
nix-instantiate --eval -E 'with <fnord/xyzzy>; 1 + 2' -I fnord=file://no-such-tarball$ext
|
||||
(! nix-instantiate --eval -E '<fnord/xyzzy> 1' -I fnord=file://no-such-tarball$ext)
|
||||
|
|
Loading…
Reference in a new issue