Added update-nixpkgs.sh script.

update-nixpkgs.sh

@@ -0,0 +1,83 @@
+#!/bin/bash -
+#===============================================================================
+#
+#          FILE: update-nixpkgs.sh
+#
+#         USAGE: ./update-nixpkgs.sh
+#
+#   DESCRIPTION: Update servant packages in nixpkgs.
+#
+#       OPTIONS: -d <NIXPKGS DIR>
+#  REQUIREMENTS: cabal2nix, git, hub
+#          BUGS: ---
+#         NOTES: ---
+#        AUTHOR: Julian Arni <jkarni@gmail.com>,
+#  ORGANIZATION: Zalora SEA
+#       CREATED: 09.01.2015 15:38
+#      REVISION:  ---
+#===============================================================================
+
+set -o nounset
+set -e
+
+# Variables
+declare -ar -x PKGS=(servant servant-client servant-server servant-jquery servant-docs)
+declare -a CHANGED
+
+PKG_NO=${#PKGS[@]}
+GIT_DIR=$(mktemp -d)
+FORK=""
+BRANCH_NAME=servant-changes
+HASKELL_LIBS=pkgs/development/libraries/haskell
+
+cleanup () {
+    echo "Removing temporary directory $GIT_DIR"
+    rm -rf $GIT_DIR
+}
+
+while getopts f: OPT ; do
+    case $OPT in
+        f) FORK=$OPTARG ;;
+    esac
+done
+
+# Check if we can proceed
+
+if [[ -z "$FORK" ]] ; then
+    echo "Your fork must be specified with -f FORK"
+    exit 1
+fi
+
+cd $GIT_DIR
+
+git clone --depth 1 git@github.com:NixOS/nixpkgs.git && cd nixpkgs
+
+trap cleanup INT TERM EXIT
+
+for ((i = 0 ; i < PKG_NO ; i++ )); do
+    PKG=${PKGS[$i]}
+    echo -n "Checking $PKG... "
+    FILE="pkgs/development/libraries/haskell/$PKG/default.nix"
+    TEMPFILE=$(tempfile)
+    cabal2nix cabal://$PKG >> $TEMPFILE
+    if [[ -n "$(diff -q $TEMPFILE $FILE)" ]] ; then
+        CHANGED+=( $PKG )
+        echo "Package updated"
+        cat $TEMPFILE > $FILE
+    else
+        echo "No changes"
+    fi
+    rm $TEMPFILE
+done
+
+git checkout -b $BRANCH_NAME
+
+if [[ ${#CHANGED[@]} -ne 0 ]]; then
+    git add pkgs/development/libraries/haskell
+    git commit -m "Updated haskell packages ${CHANGED[@]}"
+    git remote add fork $FORK
+    git push fork $BRANCH_NAME
+    hub pull-request
+fi
+
+cleanup