lix/tests/functional/regression-484.sh
jade 686120ee4a fix: good errors for failures caused by allowSubstitutes
This caused an absolute saga which I would not like anyone else to have
to experience. Let's put in a laser targeted error message that
diagnoses this exact problem.

Fixes: #484
Change-Id: I2a79f04aeb4a1b67c10115e5e39501d958836298
2024-08-23 17:49:15 -07:00

42 lines
1.4 KiB
Bash

source common.sh
# Ensures that nix build will deliver a usable error message when it encounters
# a build failure potentially caused by allowSubstitutes.
clearStore
cd $TEST_HOME
putDrv() {
cat > "$1" <<EOF
builtins.derivation {
name = "meow";
builder = "/bin/sh";
args = [];
system = "unicornsandrainbows-linux";
allowSubstitutes = ${2};
preferLocalBuild = true;
}
EOF
}
putDrv drv-disallow-substitutes.nix false
putDrv drv-allow-substitutes.nix true
expect 1 nix build --substitute --substituters '' --offline -f drv-disallow-substitutes.nix 2> output.txt
# error: a 'unicornsandrainbows-linux' with features {} is required to build '$TMPDIR/regression-484/store/...-meow.drv', but I am a 'x86_64-linux' with features {benchmark, big-parallel, kvm, nixos-test, uid-range}
#
# Hint: the failing derivation has allowSubstitutes set to false, forcing it to be built rather than substituted.
# Passing --always-allow-substitutes to force substitution may resolve this failure if the path is available in a substituter.
cat output.txt
grepQuiet unicornsandrainbows-linux output.txt
grepQuiet always-allow-substitutes output.txt
grepQuiet allowSubstitutes output.txt
expect 1 nix build --substitute --substituters '' --offline -f drv-allow-substitutes.nix 2> output.txt
cat output.txt
grepQuiet unicornsandrainbows-linux output.txt
grepQuiet -v allowSubstitutes output.txt