fix: make devshell category configurable

Author: Pacman99

nix/public-flake-module.nix

@@ -138,7 +138,14 @@ ourArgs:
                 }
               '';
             };
-            devshell = lib.mkOption {
+            devshell.name = lib.mkOption {
+              type = types.nullOr types.str;
+              default = null;
+              description = ''
+                Name of devshell to add update-cargo-nix command to.
+              '';
+            };
+            devshell.category = lib.mkOption {
               type = types.nullOr types.str;
               default = null;
               description = ''
@@ -163,10 +170,10 @@ ourArgs:
           config = lib.mkMerge [
             (lib.mkIf (options ? devshells && cfg.devshell != null) (
               (lib.optionalAttrs (options ? devshells) {
-                devshells.${cfg.devshell} = {
+                devshells.${cfg.devshell.name} = {
                   commands = [
                     {
-                      category = "development";
+                      category = lib.mkIf (cfg.devshell.category != null) cfg.devshell.category;
                       name = "update-cargo-nix";
                       help = "Update Cargo.nix";
                       command = "${lib.getExe crate2nix} generate";