uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/tools/haskell/lambdabot/custom-config.patch

@@ -0,0 +1,49 @@
+diff --git a/src/Main.hs b/src/Main.hs
+index 61da2f3..39e5c9b 100644
+--- a/src/Main.hs
++++ b/src/Main.hs
+@@ -73,11 +73,14 @@ main = do
+     config' <- sequence config
+     dir <- P.getDataDir
+     exitWith <=< lambdabotMain modulesInfo $
+-        [dataDir ==> dir, lbVersion ==> P.version] ++ config'
++        [dataDir ==> dir, lbVersion ==> P.version] ++ configInfo ++ config'
+ 
+ -- special online target for ghci use
+ online :: [String] -> IO ()
+ online strs = do
+     dir <- P.getDataDir
+-    void $ lambdabotMain modulesInfo
+-        [dataDir ==> dir, lbVersion ==> P.version, onStartupCmds ==> strs]
++    void $ lambdabotMain modulesInfo $
++        [dataDir ==> dir, lbVersion ==> P.version, onStartupCmds ==> strs] ++ configInfo
++
++configInfo :: [DSum Config Identity]
++configInfo = @config@
+diff --git a/src/Modules.hs b/src/Modules.hs
+index 036ea1f..eaafa50 100644
+--- a/src/Modules.hs
++++ b/src/Modules.hs
+@@ -14,10 +14,15 @@ import Lambdabot.Plugin.Reference
+ import Lambdabot.Plugin.Social
+ 
+ modulesInfo :: Modules
+-modulesInfo = $(modules $ corePlugins
+-    ++ haskellPlugins
+-    ++ ["irc", "localtime", "topic"] -- ircPlugins
+-    ++ ["dummy", "fresh", "todo"] -- miscPlugins
+-    ++ ["bf", "dice", "elite", "filter", "quote", "slap", "unlambda", "vixen"] -- noveltyPlugins
+-    ++ referencePlugins
+-    ++ socialPlugins)
++modulesInfo =
++  $(modules $
++    let oldDefaultModules =
++          corePlugins
++          ++ haskellPlugins
++          ++ ["irc", "localtime", "topic"] -- ircPlugins
++          ++ ["dummy", "fresh", "todo"] -- miscPlugins
++          ++ ["bf", "dice", "elite", "filter", "quote", "slap", "unlambda", "vixen"] -- noveltyPlugins
++          ++ referencePlugins
++          ++ socialPlugins
++    in @modules@
++   )

pkgs/development/tools/haskell/lambdabot/default.nix

@@ -0,0 +1,41 @@
+{ lib, haskellLib, makeWrapper, haskellPackages
+, mueval
+, withDjinn ? true
+, aspell ? null
+, packages ? (pkgs: [])
+, modules ? "oldDefaultModules"
+, configuration ? "[]"
+}:
+
+let allPkgs = pkgs: mueval.defaultPkgs pkgs ++ [ pkgs.lambdabot-trusted ] ++ packages pkgs;
+    mueval' = mueval.override {
+      inherit haskellPackages;
+      packages = allPkgs;
+    };
+    bins = lib.makeBinPath ([ mueval'
+                              (haskellPackages.ghcWithHoogle allPkgs)
+                              haskellPackages.unlambda
+                              haskellPackages.brainfuck
+                            ]
+                            ++ lib.optional withDjinn haskellPackages.djinn
+                            ++ lib.optional (aspell != null) aspell
+                           );
+    modulesStr = lib.replaceChars ["\n"] [" "] modules;
+    configStr = lib.replaceChars ["\n"] [" "] configuration;
+
+in haskellLib.overrideCabal (self: {
+  patches = (self.patches or []) ++ [ ./custom-config.patch ];
+  postPatch = (self.postPatch or "") + ''
+    substituteInPlace src/Main.hs \
+      --replace '@config@' '${configStr}'
+    substituteInPlace src/Modules.hs \
+      --replace '@modules@' '${modulesStr}'
+  '';
+
+  buildTools = (self.buildTools or []) ++ [ makeWrapper ];
+
+  postInstall = (self.postInstall or "") + ''
+    wrapProgram $out/bin/lambdabot \
+      --prefix PATH ":" '${bins}'
+  '';
+}) haskellPackages.lambdabot