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Fix overlapping flake follows

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This commit is contained in:
Sebastian Ullrich 2022-08-28 11:46:29 +02:00
parent 2b9d381301
commit 6f65c11780
2 changed files with 32 additions and 2 deletions
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2
src/libexpr/flake/lockfile.cc
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@ -338,7 +338,7 @@ void LockFile::check()
for (auto & [inputPath, input] : inputs) {
if (auto follows = std::get_if<1>(&input)) {
if (!follows->empty() && !get(inputs, *follows))
if (!follows->empty() && !findInput(*follows))
throw Error("input '%s' follows a non-existent input '%s'",
printInputPath(inputPath),
printInputPath(*follows));

32
tests/flakes/follow-paths.sh
View file

@ -149,7 +149,7 @@ git -C $flakeFollowsA add flake.nix
nix flake lock $flakeFollowsA 2>&1 | grep "warning: input 'B' has an override for a non-existent input 'invalid'"
nix flake lock $flakeFollowsA 2>&1 | grep "warning: input 'B' has an override for a non-existent input 'invalid2'"
# Test nested flake overrides
# Test nested flake overrides: A overrides B/C/D
cat <<EOF > $flakeFollowsD/flake.nix
{ outputs = _: {}; }
@ -178,3 +178,33 @@ EOF
nix flake lock $flakeFollowsA
[[ $(jq -c .nodes.C.inputs.D $flakeFollowsA/flake.lock) = '["D"]' ]]
# Test overlapping flake follows: B has D follow C/D, while A has B/C follow C
cat <<EOF > $flakeFollowsC/flake.nix
{
inputs.D.url = "path:$flakeFollowsD";
outputs = _: {};
}
EOF
cat <<EOF > $flakeFollowsB/flake.nix
{
inputs.C.url = "path:nosuchflake";
inputs.D.url = "path:nosuchflake";
inputs.D.follows = "C/D";
outputs = _: {};
}
EOF
cat <<EOF > $flakeFollowsA/flake.nix
{
inputs.B.url = "path:$flakeFollowsB";
inputs.C.url = "path:$flakeFollowsC";
inputs.B.inputs.C.follows = "C";
outputs = _: {};
}
EOF
# bug was not triggered without recreating the lockfile
nix flake lock $flakeFollowsA --recreate-lock-file
[[ $(jq -c .nodes.B.inputs.D $flakeFollowsA/flake.lock) = '["B","C","D"]' ]]