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If we can't write a lock file, pretend the top-level flake is dirty

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Alternative to #4639. You can still read flake.lock, but at least in
reproducible workflows like NixOS configurations where you require a
non-dirty tree, evaluation will fail because there is no rev.
This commit is contained in:
Eelco Dolstra 2021-09-15 18:31:42 +02:00
parent 991cc53386
commit 027344ce7e
3 changed files with 38 additions and 22 deletions
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12
src/libexpr/flake/flake.cc
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@ -635,8 +635,10 @@ LockedFlake lockFlake(
}
} else
throw Error("cannot write modified lock file of flake '%s' (use '--no-write-lock-file' to ignore)", topRef);
} else
} else {
warn("not writing modified lock file of flake '%s':\n%s", topRef, chomp(diff));
flake.forceDirty = true;
}
}
return LockedFlake { .flake = std::move(flake), .lockFile = std::move(newLockFile) };
@ -659,7 +661,13 @@ void callFlake(EvalState & state,
mkString(*vLocks, lockedFlake.lockFile.to_string());
emitTreeAttrs(state, *lockedFlake.flake.sourceInfo, lockedFlake.flake.lockedRef.input, *vRootSrc);
emitTreeAttrs(
state,
*lockedFlake.flake.sourceInfo,
lockedFlake.flake.lockedRef.input,
*vRootSrc,
false,
lockedFlake.flake.forceDirty);
mkString(*vRootSubdir, lockedFlake.flake.lockedRef.subdir);