purple-matrix-unstable 2019-06-06 -> 20210210 https://repology.org/metapackage/purple-matrix-unstable/versions attrpath: purple-matrix-unstable Received ExitFailure 1 when running Raw command: /nix/store/3nqhcyc7vid1npgcd0m7arg5sn325nhz-nix-2.12.0/bin/nix eval .#purple-matrix-unstable --apply "p: builtins.hasAttr \"updateScript\" p" Standard error: error: flake 'git+file:///var/cache/nixpkgs-update/worker/worktree/purple-matrix-unstable' does not provide attribute 'packages.x86_64-linux.purple-matrix-unstable', 'legacyPackages.x86_64-linux.purple-matrix-unstable' or 'purple-matrix-unstable'