4 files changed, 8 insertions, 16 deletions
diff --git a/krebs/4lib/default.nix b/krebs/4lib/default.nix
index f15514fe3..0a6101314 100644
--- a/krebs/4lib/default.nix
+++ b/krebs/4lib/default.nix
@@ -3,13 +3,8 @@
 with builtins;
 with lib;
 
-let
-  maybe = import ./maybe.nix { inherit lib; };
-in
-
 builtins //
 lib //
-maybe //
 rec {
 
   eq = x: y: x == y;
diff --git a/krebs/4lib/infest/finalize.sh b/krebs/4lib/infest/finalize.sh
index 0039960c5..94b13e0be 100644
--- a/krebs/4lib/infest/finalize.sh
+++ b/krebs/4lib/infest/finalize.sh
@@ -3,8 +3,8 @@ set -eux
 {
   umount /mnt/nix
   umount /mnt/root
-  umount /boot || :
   umount /mnt/boot
+  umount /boot || :
   umount /mnt
 
   coreutils_path=$(set +f; for i in /nix/store/*coreutils*/bin; do :; done; echo $i)
diff --git a/krebs/4lib/infest/prepare.sh b/krebs/4lib/infest/prepare.sh
index 9fbd5be86..94c9b0fb5 100644
--- a/krebs/4lib/infest/prepare.sh
+++ b/krebs/4lib/infest/prepare.sh
@@ -18,6 +18,13 @@ prepare() {(
         esac
         ;;
     esac
+  elif test -e /etc/centos-release; then
+    case $(cat /etc/centos-release) in
+      'CentOS release 6.5 (Final)')
+        prepare_centos "$@"
+        exit
+        ;;
+    esac
   fi
   echo "$0 prepare: unknown OS" >&2
   exit -1
diff --git a/krebs/4lib/maybe.nix b/krebs/4lib/maybe.nix
deleted file mode 100644
index 5189c99a1..000000000
--- a/krebs/4lib/maybe.nix
+++ /dev/null
@@ -1,10 +0,0 @@
-{ ... }:
-
-rec {
-  Just = x: { type = "maybe"; value = x; };
-  Nothing = { type = "maybe"; };
-  isMaybe = x: builtins.typeOf x == "set" && x.type or false == "maybe";
-  isJust = x: isMaybe x && builtins.hasAttr "value" x;
-  fromJust = x: assert isJust x; x.value;
-  catMaybes = xs: map fromJust (builtins.filter isJust xs);
-}