cannot build derivation '/tmp/nix-build-nix-1.12pre1234_abcdef.drv-0/nix-test/store/92kzd7wak16kz8l54jjvvgr99s77y8qg-build-hook.drv': 1 dependencies couldn't be built
    error: build of '/tmp/nix-build-nix-1.12pre1234_abcdef.drv-0/nix-test/store/92kzd7wak16kz8l54jjvvgr99s77y8qg-build-hook.drv' failed
    + outPath=
running test tests/nar-index.sh... [PASS]
2 out of 42 tests failed
make: *** [mk/tests.mk:12: installcheck] Error 1
build time elapsed:  0m0.162s 0m0.281s 9m11.586s 0m52.617s
builder for ‘/nix/store/a95dlrx993xh3gxp4va4k43gyszazjs4-nix-1.12pre1234_abcdef.drv’ failed with exit code 2
error: build of ‘/nix/store/a95dlrx993xh3gxp4va4k43gyszazjs4-nix-1.12pre1234_abcdef.drv’ failed
leo@leodeb:/tmp/nix$ ls