75 files changed, 79 insertions, 54 deletions

diff --git a/krebs/5pkgs/default.nix b/krebs/5pkgs/default.nix
index 81481e14b..39e89a4b6 100644
--- a/krebs/5pkgs/default.nix
+++ b/krebs/5pkgs/default.nix
@@ -1,58 +1,33 @@
-pkgs: oldpkgs:
 with import <stockholm/lib>;
-  let
-    # This callPackage will try to detect obsolete overrides.
-    callPackage = path: args: let
-      override = pkgs.callPackage path args;
-      upstream = optionalAttrs (override ? "name")
-        (oldpkgs.${(parseDrvName override.name).name} or {});
-    in if upstream ? "name" &&
-          override ? "name" &&
-          compareVersions upstream.name override.name != -1
-      then trace "Upstream `${upstream.name}' gets overridden by `${override.name}'." override
-      else override;
-  in {}
-  // import ./writers.nix pkgs oldpkgs
-  // mapAttrs (_: flip callPackage {})
-              (filterAttrs (_: dir: pathExists (dir + "/default.nix"))
-                           (subdirsOf ./.))
-  // {
-    empty = pkgs.runCommand "empty-1.0.0" {} "mkdir $out";
 
-    haskellPackages = oldpkgs.haskellPackages.override {
-      overrides = self: super:
-        mapAttrs (name: path: self.callPackage path {})
-          (mapAttrs'
-            (name: type:
-              if hasSuffix ".nix" name
-                then {
-                  name = removeSuffix ".nix" name;
-                  value = ./haskell-overrides + "/${name}";
-                }
-                else null)
-            (builtins.readDir ./haskell-overrides));
-    };
+self: super:
 
-    ReaktorPlugins = callPackage ./Reaktor/plugins.nix {};
+# Import files and subdirectories like they are overlays.
+foldl' mergeAttrs {}
+  (map
+    (name: import (./. + "/${name}") self super)
+    (filter
+      (name: name != "default.nix" && !hasPrefix "." name)
+      (attrNames (readDir ./.))))
 
-    buildbot = callPackage ./buildbot {};
-    buildbot-full = callPackage ./buildbot {
-      plugins = with pkgs.buildbot-plugins; [ www console-view waterfall-view ];
-    };
-    buildbot-worker = callPackage ./buildbot/worker.nix {};
+//
 
-    # https://github.com/proot-me/PRoot/issues/106
-    proot = pkgs.writeDashBin "proot" ''
-      export PROOT_NO_SECCOMP=1
-      exec ${oldpkgs.proot}/bin/proot "$@"
-    '';
+{
+  ReaktorPlugins = self.callPackage ./simple/Reaktor/plugins.nix {};
 
-    # XXX symlinkJoin changed arguments somewhere around nixpkgs d541e0d
-    symlinkJoin = { name, paths, ... }@args: let
-      x = oldpkgs.symlinkJoin args;
-    in if typeOf x != "lambda" then x else oldpkgs.symlinkJoin name paths;
+  buildbot-full = self.callPackage ./simple/buildbot {
+    plugins = with self.buildbot-plugins; [ www console-view waterfall-view ];
+  };
+  buildbot-worker = self.callPackage ./simple/buildbot/worker.nix {};
 
-    test = {
-      infest-cac-centos7 = callPackage ./test/infest-cac-centos7 {};
-    };
-  }
+  # https://github.com/proot-me/PRoot/issues/106
+  proot = self.writeDashBin "proot" ''
+    export PROOT_NO_SECCOMP=1
+    exec ${super.proot}/bin/proot "$@"
+  '';
+
+  # XXX symlinkJoin changed arguments somewhere around nixpkgs d541e0d
+  symlinkJoin = { name, paths, ... }@args: let
+    x = super.symlinkJoin args;
+  in if typeOf x != "lambda" then x else super.symlinkJoin name paths;
+}
diff --git a/krebs/5pkgs/haskell-overrides/blessings.nix b/krebs/5pkgs/haskell/blessings.nix
index f852b4a44..f852b4a44 100644
--- a/krebs/5pkgs/haskell-overrides/blessings.nix
+++ b/krebs/5pkgs/haskell/blessings.nix
diff --git a/krebs/5pkgs/haskell/default.nix b/krebs/5pkgs/haskell/default.nix
new file mode 100644
index 000000000..1120356a7
--- /dev/null
+++ b/krebs/5pkgs/haskell/default.nix
@@ -0,0 +1,15 @@
+with import <stockholm/lib>;
+
+self: super:
+{
+  haskellPackages = super.haskellPackages.override {
+    overrides = self: super:
+      listToAttrs
+        (map
+          (name: nameValuePair (removeSuffix ".nix" name)
+                               (self.callPackage (./. + "/${name}") {}))
+          (filter
+            (name: name != "default.nix" && !hasPrefix "." name)
+            (attrNames (readDir ./.))));
+  };
+}
diff --git a/krebs/5pkgs/haskell-overrides/email-header.nix b/krebs/5pkgs/haskell/email-header.nix
index b54240809..b54240809 100644
--- a/krebs/5pkgs/haskell-overrides/email-header.nix
+++ b/krebs/5pkgs/haskell/email-header.nix
diff --git a/krebs/5pkgs/haskell-overrides/hyphenation.nix b/krebs/5pkgs/haskell/hyphenation.nix
index 6e5fe9455..6e5fe9455 100644
--- a/krebs/5pkgs/haskell-overrides/hyphenation.nix
+++ b/krebs/5pkgs/haskell/hyphenation.nix
diff --git a/krebs/5pkgs/haskell-overrides/kirk.nix b/krebs/5pkgs/haskell/kirk.nix
index 073e5d505..073e5d505 100644
--- a/krebs/5pkgs/haskell-overrides/kirk.nix
+++ b/krebs/5pkgs/haskell/kirk.nix
diff --git a/krebs/5pkgs/haskell-overrides/news.nix b/krebs/5pkgs/haskell/news.nix
index ba5e7a5e1..ba5e7a5e1 100644
--- a/krebs/5pkgs/haskell-overrides/news.nix
+++ b/krebs/5pkgs/haskell/news.nix
diff --git a/krebs/5pkgs/haskell-overrides/scanner.nix b/krebs/5pkgs/haskell/scanner.nix
index 071fd757f..071fd757f 100644
--- a/krebs/5pkgs/haskell-overrides/scanner.nix
+++ b/krebs/5pkgs/haskell/scanner.nix
diff --git a/krebs/5pkgs/haskell-overrides/xmonad-stockholm.nix b/krebs/5pkgs/haskell/xmonad-stockholm.nix
index bf19e7d66..bf19e7d66 100644
--- a/krebs/5pkgs/haskell-overrides/xmonad-stockholm.nix
+++ b/krebs/5pkgs/haskell/xmonad-stockholm.nix
diff --git a/krebs/5pkgs/Reaktor/default.nix b/krebs/5pkgs/simple/Reaktor/default.nix
index fc3710820..fc3710820 100644
--- a/krebs/5pkgs/Reaktor/default.nix
+++ b/krebs/5pkgs/simple/Reaktor/default.nix
diff --git a/krebs/5pkgs/Reaktor/plugins.nix b/krebs/5pkgs/simple/Reaktor/plugins.nix
index e85e41cfe..e85e41cfe 100644
--- a/krebs/5pkgs/Reaktor/plugins.nix
+++ b/krebs/5pkgs/simple/Reaktor/plugins.nix
diff --git a/krebs/5pkgs/Reaktor/scripts/random-emoji.sh b/krebs/5pkgs/simple/Reaktor/scripts/random-emoji.sh
index 386aa68b9..386aa68b9 100644
--- a/krebs/5pkgs/Reaktor/scripts/random-emoji.sh
+++ b/krebs/5pkgs/simple/Reaktor/scripts/random-emoji.sh
diff --git a/krebs/5pkgs/Reaktor/scripts/random-issue.sh b/krebs/5pkgs/simple/Reaktor/scripts/random-issue.sh
index 5c47c6156..5c47c6156 100644
--- a/krebs/5pkgs/Reaktor/scripts/random-issue.sh
+++ b/krebs/5pkgs/simple/Reaktor/scripts/random-issue.sh
diff --git a/krebs/5pkgs/Reaktor/scripts/sed-plugin.py b/krebs/5pkgs/simple/Reaktor/scripts/sed-plugin.py
index da8e2f726..da8e2f726 100644
--- a/krebs/5pkgs/Reaktor/scripts/sed-plugin.py
+++ b/krebs/5pkgs/simple/Reaktor/scripts/sed-plugin.py
diff --git a/krebs/5pkgs/Reaktor/scripts/shack-correct.sh b/krebs/5pkgs/simple/Reaktor/scripts/shack-correct.sh
index 3b4d04f80..3b4d04f80 100644
--- a/krebs/5pkgs/Reaktor/scripts/shack-correct.sh
+++ b/krebs/5pkgs/simple/Reaktor/scripts/shack-correct.sh
diff --git a/krebs/5pkgs/apt-cacher-ng/default.nix b/krebs/5pkgs/simple/apt-cacher-ng/default.nix
index e3986713b..e3986713b 100644
--- a/krebs/5pkgs/apt-cacher-ng/default.nix
+++ b/krebs/5pkgs/simple/apt-cacher-ng/default.nix
diff --git a/krebs/5pkgs/bepasty-client-cli/default.nix b/krebs/5pkgs/simple/bepasty-client-cli/default.nix
index c58e637b3..c58e637b3 100644
--- a/krebs/5pkgs/bepasty-client-cli/default.nix
+++ b/krebs/5pkgs/simple/bepasty-client-cli/default.nix
diff --git a/krebs/5pkgs/buildbot/default.nix b/krebs/5pkgs/simple/buildbot/default.nix
index 37eea5fd9..37eea5fd9 100644
--- a/krebs/5pkgs/buildbot/default.nix
+++ b/krebs/5pkgs/simple/buildbot/default.nix
diff --git a/krebs/5pkgs/buildbot/worker.nix b/krebs/5pkgs/simple/buildbot/worker.nix
index 34e526858..34e526858 100644
--- a/krebs/5pkgs/buildbot/worker.nix
+++ b/krebs/5pkgs/simple/buildbot/worker.nix
diff --git a/krebs/5pkgs/cac-api/default.nix b/krebs/5pkgs/simple/cac-api/default.nix
ind