lix/tests/functional/symlink-derivation.nix

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with import ./config.nix;
let
foo_in_store = builtins.toFile "foo" "foo";
foo_symlink = mkDerivation {
name = "foo-symlink";
buildCommand = ''
ln -s ${foo_in_store} $out
'';
};
symlink_to_not_in_store = mkDerivation {
name = "symlink-to-not-in-store";
buildCommand = ''
ln -s ${builtins.toString ./.} $out
'';
};
in
mkDerivation {
name = "depends-on-symlink";
buildCommand = ''
(
set -x
# `foo_symlink` should be a symlink pointing to `foo_in_store`
[[ -L ${foo_symlink} ]]
[[ $(readlink ${foo_symlink}) == ${foo_in_store} ]]
# `symlink_to_not_in_store` should be a symlink pointing to `./.`, which
# is not available in the sandbox
[[ -L ${symlink_to_not_in_store} ]]
[[ $(readlink ${symlink_to_not_in_store}) == ${builtins.toString ./.} ]]
(! ls ${symlink_to_not_in_store}/)
)
echo "Success!" > $out
'';
}