Merge pull request #5720 from tomberek/flake_search

flakes: search up to git or filesystem boundary

tests/flake-searching.sh

@@ -0,0 +1,45 @@
+source common.sh
+
+clearStore
+
+cp ./simple.nix ./simple.builder.sh ./config.nix $TEST_HOME
+cd $TEST_HOME
+mkdir -p foo/subdir
+echo '{ outputs = _: {}; }' > foo/flake.nix
+cat <<EOF > flake.nix
+{
+    inputs.foo.url = "$PWD/foo";
+    outputs = a: {
+       defaultPackage.$system = import ./simple.nix;
+       packages.$system.test = import ./simple.nix;
+    };
+}
+EOF
+mkdir subdir
+pushd subdir
+
+success=("" . .# .#test ../subdir ../subdir#test "$PWD")
+failure=("path:$PWD")
+
+for i in "${success[@]}"; do
+    nix build $i || fail "flake should be found by searching up directories"
+done
+
+for i in "${failure[@]}"; do
+    ! nix build $i || fail "flake should not search up directories when using 'path:'"
+done
+
+popd
+
+nix build --override-input foo . || fail "flake should search up directories when not an installable"
+
+sed "s,$PWD/foo,$PWD/foo/subdir,g" -i flake.nix
+! nix build || fail "flake should not search upwards when part of inputs"
+
+pushd subdir
+git init
+for i in "${success[@]}" "${failure[@]}"; do
+    ! nix build $i || fail "flake should not search past a git repository"
+done
+rm -rf .git
+popd

tests/local.mk

@@ -47,6 +47,7 @@ nix_tests = \
   describe-stores.sh \
   flakes.sh \
   flake-local-settings.sh \
+  flake-searching.sh \
   build.sh \
   repl.sh ca/repl.sh \
   ca/build.sh \