lix/tests/functional/flakes/check.sh

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source common.sh
flakeDir=$TEST_ROOT/flake3
mkdir -p $flakeDir
cat > $flakeDir/flake.nix <<EOF
{
outputs = { self }: {
overlay = final: prev: {
};
};
}
EOF
nix flake check $flakeDir
cat > $flakeDir/flake.nix <<EOF
{
outputs = { self }: {
overlay = finalll: prev: {
};
};
}
EOF
(! nix flake check $flakeDir)
nix flake check: improve error message if overlay is not a lambda (#8582) * nix flake check: improve error message if overlay is not a lambda Suppose you have an overlay like this { inputs = { /* ... */ }; outputs = { flake-utils, ... }: flake-utils.lib.eachDefaultSystem (system: { overlays.default = final: prev: { }; }); } then `nix flake check` (correctly) fails because `overlays` are supposed to have the structure `overlays.<name> = final: prev: exp`. However, the error-message is a little bit counter-intuitive: error: overlay does not take an argument named 'final' While one might guess where the error actually comes from because the trace above says `… while checking the overlay 'overlays.x86_64-linux'` this is still pretty confusing because it complains about an argument not being named `final` even though that's evidently the case. With this change, the error-message actually makes it clear what's wrong: [ma27@carsten:~/Projects/nix/tmp]$ nix flake check --extra-experimental-features 'nix-command flakes' path:$(pwd) error: … while checking flake output 'overlays' at /nix/store/clgblnxx003hyrq8qkz5ab6kgqkck6qc-source/flake.nix:4:5: 3| outputs = { ... }: { 4| overlays.x86_64-linux.snens = final: prev: { | ^ 5| kek = throw "snens"; … while checking the overlay 'overlays.x86_64-linux' at /nix/store/clgblnxx003hyrq8qkz5ab6kgqkck6qc-source/flake.nix:4:5: 3| outputs = { ... }: { 4| overlays.x86_64-linux.snens = final: prev: { | ^ 5| kek = throw "snens"; error: overlay is not a lambda, but a set instead
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cat > $flakeDir/flake.nix <<EOF
{
outputs = { self, ... }: {
overlays.x86_64-linux.foo = final: prev: {
};
};
}
EOF
checkRes=$(nix flake check $flakeDir 2>&1 && fail "nix flake check --all-systems should have failed" || true)
echo "$checkRes" | grepQuiet "error: overlay is not a function, but a set instead"
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cat > $flakeDir/flake.nix <<EOF
{
outputs = { self }: {
nixosModules.foo = {
a.b.c = 123;
foo = true;
};
};
}
EOF
nix flake check $flakeDir
cat > $flakeDir/flake.nix <<EOF
{
outputs = { self }: {
nixosModules.foo = assert false; {
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a.b.c = 123;
foo = true;
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};
};
}
EOF
(! nix flake check $flakeDir)
cat > $flakeDir/flake.nix <<EOF
{
outputs = { self }: {
nixosModule = { config, pkgs, ... }: {
a.b.c = 123;
};
};
}
EOF
nix flake check $flakeDir
cat > $flakeDir/flake.nix <<EOF
{
outputs = { self }: {
packages.system-1.default = "foo";
packages.system-2.default = "bar";
};
}
EOF
nix flake check $flakeDir
checkRes=$(nix flake check --all-systems --keep-going $flakeDir 2>&1 && fail "nix flake check --all-systems should have failed" || true)
echo "$checkRes" | grepQuiet "packages.system-1.default"
echo "$checkRes" | grepQuiet "packages.system-2.default"