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Add builtins.fetchClosure

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This allows closures to be imported at evaluation time, without
requiring the user to configure substituters. E.g.

  builtins.fetchClosure {
    storePath = /nix/store/f89g6yi63m1ywfxj96whv5sxsm74w5ka-python3.9-sqlparse-0.4.2;
    from = "https://cache.ngi0.nixos.org";
  }
This commit is contained in:
Eelco Dolstra 2022-03-21 11:31:01 +01:00
parent c9148f4ece
commit f4bafc412f
2 changed files with 64 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

4
src/libexpr/primops/fetchTree.cc
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@ -145,7 +145,7 @@ static void fetchTree(
if (!params.allowNameArgument)
if (auto nameIter = attrs.find("name"); nameIter != attrs.end())
throw Error({
.msg = hintfmt("attribute 'name' isn’t supported in call to 'fetchTree'"),
.msg = hintfmt("attribute 'name' isn't supported in call to 'fetchTree'"),
.errPos = pos
});
@ -329,7 +329,7 @@ static RegisterPrimOp primop_fetchTarball({
.fun = prim_fetchTarball,
});
static void prim_fetchGit(EvalState &state, const Pos &pos, Value **args, Value &v)
static void prim_fetchGit(EvalState & state, const Pos & pos, Value * * args, Value & v)
{
fetchTree(state, pos, args, v, "git", FetchTreeParams { .emptyRevFallback = true, .allowNameArgument = true });
}