rm pre-commit hook for docs & mv error catch to package

flake.nix

@@ -299,17 +299,6 @@
                   fi
                 '');
               };
-              build-docs = {
-                enable = true;
-                name = "build-docs";
-                entry = l.toString (pkgs.writeScript "build-docs" ''
-                  #!${pkgs.bash}/bin/bash
-                  errors=$(mdbook build docs/ 2>&1 | grep ERROR) # no better way?!
-                  if [ "$errors" ]; then
-                    exit 1
-                  fi
-                '');
-              };
             };
           };
         };
@@ -317,9 +306,14 @@
           docs =
             pkgs.runCommand
             "dream2nix-docs"
-            {nativeBuildInputs = [pkgs.mdbook];}
+            {nativeBuildInputs = [pkgs.bash pkgs.mdbook];}
             ''
-              mdbook build -d $out ${./.}/docs
+              bash -c "
+              errors=$(mdbook build -d $out ${./.}/docs |& grep ERROR)
+              if [ \"$errors\" ]; then
+                exit 1
+              fi
+              "
             '';
         };
       };