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Backport SourcePath from the lazy-trees branch

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This introduces the SourcePath type from lazy-trees as an abstraction
for accessing files from inputs that may not be materialized in the
real filesystem (e.g. Git repositories). Currently, however, it's just
a wrapper around CanonPath, so it shouldn't change any behaviour. (On
lazy-trees, SourcePath is a <InputAccessor, CanonPath> tuple.)
This commit is contained in:
Eelco Dolstra 2023-04-06 13:15:50 +02:00
parent 5256ba6d87
commit 94812cca98
35 changed files with 567 additions and 263 deletions
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6
src/nix-env/user-env.cc
View file

@ -19,10 +19,10 @@ DrvInfos queryInstalled(EvalState & state, const Path & userEnv)
DrvInfos elems;
if (pathExists(userEnv + "/manifest.json"))
throw Error("profile '%s' is incompatible with 'nix-env'; please use 'nix profile' instead", userEnv);
Path manifestFile = userEnv + "/manifest.nix";
auto manifestFile = userEnv + "/manifest.nix";
if (pathExists(manifestFile)) {
Value v;
state.evalFile(manifestFile, v);
state.evalFile(state.rootPath(CanonPath(manifestFile)), v);
Bindings & bindings(*state.allocBindings(0));
getDerivations(state, v, "", bindings, elems, false);
}
@ -114,7 +114,7 @@ bool createUserEnv(EvalState & state, DrvInfos & elems,
Value envBuilder;
state.eval(state.parseExprFromString(
#include "buildenv.nix.gen.hh"
, "/"), envBuilder);
, state.rootPath(CanonPath::root)), envBuilder);
/* Construct a Nix expression that calls the user environment
builder with the manifest as argument. */