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nix develop: Respect legacyPackages #413

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Merged
edolstra merged 1 commit into from
Apr 6, 2026
Merged

nix develop: Respect legacyPackages #413

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1 change: 1 addition & 0 deletions src/libcmd/builtin-flake-schemas.nix
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Original file line number Diff line number Diff line change
Expand Up @@ -137,6 +137,7 @@
roles.nix-build = { };
roles.nix-run = { };
roles.nix-search = { };
roles.nix-develop = { };
appendSystem = true;
inventory =
output:
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17 changes: 17 additions & 0 deletions tests/functional/flakes/develop.sh
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Expand Up @@ -192,3 +192,20 @@ sed -i "$TEST_HOME/flake.nix" -e 's/devShells/devShells2/' # remove devShells
[[ $(nix develop . -L --command sh -c "echo \$x") == "bar" ]]
sed -i "$TEST_HOME/flake.nix" -e 's/devShell/devShell2/' # remove devShell
[[ $(nix develop . -L --command sh -c "echo \$x") == "xyzzy" ]]

# Check that legacyPackages is used, but only when specifying an explicit package.
cat <<EOF >"$TEST_HOME/flake.nix"
{
inputs.nixpkgs.url = "$TEST_HOME/nixpkgs";
outputs = {self, nixpkgs}: {
legacyPackages.$system.default = (import ./config.nix).mkDerivation {
name = "hello";
buildCommand = "set -x; mkdir \$out";
x = "foo";
};
};
}
EOF

(! nix develop . -L --command sh -c "echo \$x")
[[ $(nix develop .#default -L --command sh -c "echo \$x") == "foo" ]]
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