Couldn't get attributes to build. Error was: warning: ignoring untrusted flake configuration setting 'extra-experimental-features'.
Pass '--accept-flake-config' to trust it
warning: ignoring untrusted flake configuration setting 'extra-substituters'.
Pass '--accept-flake-config' to trust it
warning: ignoring untrusted flake configuration setting 'extra-trusted-public-keys'.
Pass '--accept-flake-config' to trust it
warning: ignoring untrusted flake configuration setting 'registries'.
Pass '--accept-flake-config' to trust it
warning: ignoring untrusted flake configuration setting 'sandbox'.
Pass '--accept-flake-config' to trust it
evaluation warning: mkPackageOptionMD is deprecated and will be removed in 25.05; please use mkPackageOption.
error:
       … while evaluating the attribute 'checks'
         at /nix/store/sgzr7l4gf0c6cydqlp69i92qm4ls6ilf-source/flake.nix:204:7:
          203|
          204|       checks = self.projectConfigurations.${system}.checks;
             |       ^
          205|       formatter = self.projectConfigurations.${system}.formatter;

       … while evaluating the attribute 'projectConfigurations.x86_64-linux.checks'
         at /nix/store/wvfmh4la7mny8wc4i5ia8yxllx2zbddk-source/modules/default.nix:50:5:
           49|     packages
           50|     checks
             |     ^
           51|     sandboxedChecks

       … while evaluating the option `warnings':

       … while evaluating definitions from `/nix/store/wvfmh4la7mny8wc4i5ia8yxllx2zbddk-source/modules/project-environment.nix':

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: attribute '"25.05"' missing
       at /nix/store/wvfmh4la7mny8wc4i5ia8yxllx2zbddk-source/modules/project-environment.nix:455:27:
          454|       nixpkgsRelease = lib.trivial.release;
          455|       allowedPmVersions = supportedVersions.${nixpkgsRelease};
             |                           ^
          456|       releaseMismatch =
       Did you mean one of 21.05, 22.05, 23.05, 24.05 or 15.09?