Script to update nixpkgs derivation for sublime3-dev builds.

update_sublime_nixpkg.sh

#!/usr/bin/env nix-shell
#! nix-shell -i bash -p go-pup

WD="${1:-$HOME/nixpkgs}"
NIXEXPR="$WD/pkgs/applications/editors/sublime3-dev/default.nix"

LATEST_BUILD=$( curl -s http://www.sublimetext.com/3dev \
              | pup "h2" | grep Build | cut -d" " -f 3 | sort -rn | head -n 1)
SHA_32=$(curl -s "https://download.sublimetext.com/sublime_text_3_build_${LATEST_BUILD}_x32.tar.bz2" \
        | sha256sum | cut -d' ' -f1)
SHA_64=$(curl -s "https://download.sublimetext.com/sublime_text_3_build_${LATEST_BUILD}_x64.tar.bz2" \
        | sha256sum | cut -d' ' -f1)

echo $SHA_32
echo $SHA_64

sed -e "9s/build = \".*\";/build = \"$LATEST_BUILD\";/" \
    -e "23s/sha256 = \".*\";/sha256 = \"$SHA_32\";/" \
    -e "29s/sha256 = \".*\";/sha256 = \"$SHA_64\";/" \
    -i $NIXEXPR

cd $WD
git add $NIXEXPR
git commit --amend --no-edit

nix-env -f '<nixpkgs>' -iA all