3 files changed, 24 insertions, 13 deletions
diff --git a/krebs/5pkgs/default.nix b/krebs/5pkgs/default.nix
index af4cbb3ba..84c00e82d 100644
--- a/krebs/5pkgs/default.nix
+++ b/krebs/5pkgs/default.nix
@@ -13,6 +13,15 @@ foldl' mergeAttrs {}
 //
 
 {
+  # https://github.com/NixOS/nixpkgs/pull/30065
+  brscan4 = overrideDerivation super.brscan4 (original: rec {
+    name = "brscan4-0.4.4-4";
+    src = super.fetchurl {
+      url = "http://download.brother.com/welcome/dlf006645/${name}.amd64.deb";
+      sha256 = "0xy5px96y1saq9l80vwvfn6anr2q42qlxdhm6ci2a0diwib5q9fd";
+    };
+  });
+
   ReaktorPlugins = self.callPackage ./simple/Reaktor/plugins.nix {};
 
   # https://github.com/proot-me/PRoot/issues/106
diff --git a/krebs/5pkgs/simple/Reaktor/plugins.nix b/krebs/5pkgs/simple/Reaktor/plugins.nix
index c611d7471..518e80d0e 100644
--- a/krebs/5pkgs/simple/Reaktor/plugins.nix
+++ b/krebs/5pkgs/simple/Reaktor/plugins.nix
@@ -144,7 +144,8 @@ rec {
     '';
   };
   wiki-todo-show = buildSimpleReaktorPlugin "wiki-todo" {
-    script = pkgs.writeDash "wiki-todo-add" ''
+    pattern = "^wiki-show$";
+    script = pkgs.writeDash "wiki-show" ''
       ${pkgs.coreutils}/bin/cat wiki-todo
     '';
   };
diff --git a/krebs/5pkgs/simple/git-preview/default.nix b/krebs/5pkgs/simple/git-preview/default.nix
index f20f2a636..77826f34b 100644
--- a/krebs/5pkgs/simple/git-preview/default.nix
+++ b/krebs/5pkgs/simple/git-preview/default.nix
@@ -1,15 +1,16 @@
-{ coreutils, git, stdenv, writeDashBin }:
+{ coreutils, git, writeDashBin }:
 
 writeDashBin "git-preview" ''
-  PATH=${stdenv.lib.makeBinPath [
-    coreutils
-    git
-  ]}''${PATH+:$PATH}
-  hashes=$(git log --format=%h "..$1")
-  end=$(echo "$hashes" | head -1)
-  start=$(echo "$hashes" | tail -1)
-  # exit if no diff was found
-  test -z "$start" && exit 0
-  shift
-  git diff "$start^..$end" "$@"
+  set -efu
+  head_commit=$(${git}/bin/git log -1 --format=%H)
+  merge_commit=$1; shift
+  merge_message='Merge for git-preview'
+  preview_dir=$(${coreutils}/bin/mktemp --tmpdir -d git-preview.XXXXXXXX)
+  preview_name=$(${coreutils}/bin/basename "$preview_dir")
+  ${git}/bin/git worktree add --detach -f "$preview_dir" 2>/dev/null
+  ${git}/bin/git -C "$preview_dir" checkout -q "$head_commit"
+  ${git}/bin/git -C "$preview_dir" merge -qm "$merge_message" "$merge_commit"
+  ${git}/bin/git -C "$preview_dir" diff "$head_commit.." "$@"
+  ${coreutils}/bin/rm -fR "$preview_dir"
+  ${coreutils}/bin/rm -R .git/worktrees/"$preview_name"
 ''