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testing: migrate non-pty bits of flakes/show.sh

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Change-Id: I4884fd34fa485f9f91281dc3efd69dedd3aad3d9
This commit is contained in:
eldritch horrors
2026-02-17 16:00:59 +01:00
parent ffefebd9f4
commit 762a28a698
4 changed files with 114 additions and 86 deletions
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tests/functional/flakes/show.sh
-86
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@@ -7,92 +7,6 @@ writeSimpleFlake "$flakeDir"
cd "$flakeDir"
# FIXME(jade): the following is rather absurd. we have jq!
# By default: Only show the packages content for the current system and no
# legacyPackages at all
nix flake show --json > show-output.json
nix eval --impure --expr '
let show_output = builtins.fromJSON (builtins.readFile ./show-output.json);
in
assert show_output.packages.someOtherSystem.default == {};
assert show_output.packages.${builtins.currentSystem}.default.name == "simple";
assert show_output.legacyPackages.${builtins.currentSystem} == {};
true
'
# Follow --eval-system for determining the system for flakes
nix flake show --eval-system someOtherSystem --json > show-output.json
drvTitle=$(jq -r '.packages.someOtherSystem.default.name' show-output.json)
[[ $drvTitle == 'simple' ]]
# With `--all-systems`, show the packages for all systems
nix flake show --json --all-systems > show-output.json
nix eval --impure --expr '
let show_output = builtins.fromJSON (builtins.readFile ./show-output.json);
in
assert show_output.packages.someOtherSystem.default.name == "simple";
assert show_output.legacyPackages.${builtins.currentSystem} == {};
true
'
# With `--legacy`, show the legacy packages
nix flake show --json --legacy > show-output.json
nix eval --impure --expr '
let show_output = builtins.fromJSON (builtins.readFile ./show-output.json);
in
assert show_output.legacyPackages.${builtins.currentSystem}.hello.name == "simple";
true
'
# Test that attributes are only reported when they have actual content
cat >flake.nix <<EOF
{
description = "Bla bla";
outputs = inputs: rec {
apps.$system = { };
checks.$system = { };
devShells.$system = { };
legacyPackages.$system = { };
packages.$system = { };
packages.someOtherSystem = { };
formatter = { };
nixosConfigurations = { };
nixosModules = { };
};
}
EOF
nix flake show --json --all-systems > show-output.json
nix eval --impure --expr '
let show_output = builtins.fromJSON (builtins.readFile ./show-output.json);
in
assert show_output == { };
true
'
# Test that attributes with errors are handled correctly.
# nixpkgs.legacyPackages is a particularly prominent instance of this.
cat >flake.nix <<EOF
{
outputs = inputs: {
legacyPackages.$system = {
AAAAAASomeThingsFailToEvaluate = throw "nooo";
simple = import ./simple.nix;
};
};
}
EOF
nix flake show --json --legacy --all-systems > show-output.json
nix eval --impure --expr '
let show_output = builtins.fromJSON (builtins.readFile ./show-output.json);
in
assert show_output.legacyPackages.${builtins.currentSystem}.AAAAAASomeThingsFailToEvaluate == { };
assert show_output.legacyPackages.${builtins.currentSystem}.simple.name == "simple";
true
'
cat >flake.nix<<EOF
{
outputs = inputs: {