ghcSplices-8_10: Use upstream ghc-8.10.7-release instead of ghc-8.10

There are changes in upstream's ghc-8.10 that aren't part of ghc-8.10.7
and this causes the nixpkgs to fail (because it tries to apply patches
that have since been upstreamed)

default.nix

@@ -34,7 +34,7 @@ let iosSupport = system == "x86_64-darwin";
             # When building from the ghc git repo, ./boot must be run before configuring, whereas
             # in the distribution tarball on the haskell.org downloads page, ./boot has already been
             # run.
-            preConfigure= ''
+            preConfigure = ''
               echo ${drv.version} >VERSION
               ./boot
             '' + drv.preConfigure or "";
@@ -59,8 +59,9 @@ let iosSupport = system == "x86_64-darwin";
             # When building from the ghc git repo, ./boot must be run before configuring, whereas
             # in the distribution tarball on the haskell.org downloads page, ./boot has already been
             # run.
-            preConfigure= ''
+            prePatch = ''
               echo ${drv.version} >VERSION
+              patchShebangs boot
               ./boot
             '' + drv.preConfigure or "";
           });

haskell-overlays/splices-load-save/dep/ghc-8.10/github.json

@@ -1,9 +1,9 @@
 {
   "owner": "obsidiansystems",
   "repo": "ghc",
-  "branch": "ghc-8.10-android",
+  "branch": "ghc-8.10.7-android",
   "private": false,
-  "rev": "8c8bb87f4ba16a5262f68e6cfde31b2ec0a92067",
-  "sha256": "sha256-fNs3I27mv47mFV0D6iz8fQ1cs8yX3X5usw87km9CTwA=",
+  "rev": "bd86357260ee65c8a9fe884419346d408b399aab",
+  "sha256": "1crm7496q29mn50vfij25ii05vvw18g31b2sj6c2ihdn9ws3g7v1",
   "fetchSubmodules": true
 }