forked from lix-project/lix
getFlake: In pure mode, check that the argument is an immutable flakeref
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@ -628,8 +628,13 @@ void callFlake(EvalState & state,
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static void prim_getFlake(EvalState & state, const Pos & pos, Value * * args, Value & v)
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{
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auto flakeRefS = state.forceStringNoCtx(*args[0], pos);
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auto flakeRef = parseFlakeRef(flakeRefS);
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if (evalSettings.pureEval && !flakeRef.input->isImmutable())
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throw Error("cannot call 'getFlake' on mutable flake reference '%s', at %s (use --impure to override)", flakeRefS, pos);
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callFlake(state,
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lockFlake(state, parseFlakeRef(state.forceStringNoCtx(*args[0], pos)),
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lockFlake(state, flakeRef,
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LockFlags {
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.updateLockFile = false,
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.useRegistries = !evalSettings.pureEval,
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@ -194,6 +194,13 @@ nix build -o $TEST_ROOT/result git+file://$flake1Dir
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nix build -o $flake1Dir/result git+file://$flake1Dir
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nix path-info $flake1Dir/result
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# 'getFlake' on a mutable flakeref should fail in pure mode, but succeed in impure mode.
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(! nix build -o $TEST_ROOT/result --expr "(builtins.getFlake \"$flake1Dir\").defaultPackage.$system")
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nix build -o $TEST_ROOT/result --expr "(builtins.getFlake \"$flake1Dir\").defaultPackage.$system" --impure
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# 'getFlake' on an immutable flakeref should succeed even in pure mode.
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nix build -o $TEST_ROOT/result --expr "(builtins.getFlake \"git+file://$flake1Dir?rev=$hash2\").defaultPackage.$system"
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# Building a flake with an unlocked dependency should fail in pure mode.
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(! nix build -o $TEST_ROOT/result flake2#bar --no-registries)
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(! nix eval --expr "builtins.getFlake \"$flake2Dir\"")
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