Fix inconsistent comment indentation in parameter lists

src/Nixfmt/Pretty.hs

@@ -350,7 +350,8 @@ instance Pretty Parameter where
     group $
       pretty (moveTrailingCommentUp bopen)
         <> surroundWith sep (nest $ sepBy sep $ handleTrailingComma $ map moveParamAttrComment $ moveParamsComments attrs)
-        <> pretty bclose
+        <> nest (pretty (preTrivia bclose))
+        <> pretty (bclose{preTrivia = []})
     where
       -- pretty all ParamAttrs, but mark the trailing comma of the last element specially
       -- This is so that the trailing comma will only be printed in the expanded form

test/correct/commented-params-list.nix

@@ -0,0 +1,35 @@
+{
+  # param1,
+  param2,
+  # param3,
+  # param4,
+  param5,
+  # param6,
+}:
+{
+  # param7,
+  param8,
+  # param9,
+  /*
+    multiline comment
+    1
+  */
+  # param10,
+  param11,
+  /*
+    multiline comment
+    2
+  */
+}:
+{
+  param12,
+
+  # param13
+}:
+{
+  param13,
+
+  # param14
+
+}:
+{ }

test/diff/monsters_1/out-pure.nix

@@ -46,7 +46,7 @@
   # foo
   # foo
   wrapGAppsHook4,
-# foo
+  # foo
 }:
 # foo
 stdenv.mkDerivation

test/diff/monsters_1/out.nix

@@ -46,7 +46,7 @@
   # foo
   # foo
   wrapGAppsHook4,
-# foo
+  # foo
 }:
 # foo
 stdenv.mkDerivation

test/diff/pattern/out-pure.nix

@@ -683,8 +683,8 @@
       # g
       #
       ...
-    # h
-    #
+      # h
+      #
     }
     # i
     #

test/diff/pattern/out.nix

@@ -683,8 +683,8 @@
       # g
       #
       ...
-    # h
-    #
+      # h
+      #
     }
     # i
     #