haskell.compiler.ghcjs: fix build (#228749)

Apply a patch from upstream `ghcjs/ghcjs/ghc-8.10` (not yet present in
the obsidiansystems fork we follow) to fix a build failure caused by an
emscripten update.

As the patch itself modifies patches that are used during configuration
(by `makePackages.sh`), it must be applied in the configured source derivation.

pkgs/development/compilers/ghcjs/8.10/configured-ghcjs-src.nix

@@ -5,8 +5,7 @@
 , gcc
 , cabal-install
 , runCommand
-, lib
-, stdenv
+, fetchpatch
 
 , ghc
 , happy
@@ -28,7 +27,14 @@ runCommand "configured-ghcjs-src" {
     cabal-install
     gcc
   ];
+
   inherit ghcjsSrc;
+
+  ctimePatch = fetchpatch {
+    name = "ghcjs-base-ctime-64-bit.patch";
+    url = "https://github.com/ghcjs/ghcjs/commit/b7711fbca7c3f43a61f1dba526e6f2a2656ef44c.patch";
+    hash = "sha256-zZ3l8/5gbIGtvu0s2Xl92fEDhkhJ2c2w+5Ql5qkvr3s=";
+  };
 } ''
   export HOME=$(pwd)
   mkdir $HOME/.cabal
@@ -37,6 +43,8 @@ runCommand "configured-ghcjs-src" {
   chmod -R +w "$out"
   cd "$out"
 
+  patch -p1 -i "$ctimePatch"
+
   # TODO: Find a better way to avoid impure version numbers
   sed -i 's/RELEASE=NO/RELEASE=YES/' ghc/configure.ac