automate habs a little

cabal2pkgbuild

#!/usr/bin/env zsh

# Created by rejuvyesh <[email protected]>

usage="Usage: ./cabal2pkgbuild <HACKAGE_PACKAGES_FILE>"

if [[ -z $1 ]]; then
	echo $usage
	exit 1
fi
if [[ ! -f $1 ]]; then
	echo "\`$1' does not exist or is not a regular file"
	exit 1
fi

hackage_url="http://hackage.haskell.org"
hackage_packages_file=($(<$1))

# Add packages from Hackage
for hp in $hackage_packages_file; do
	# Grab latest version of package
	cabal_file=$(curl -s $hackage_url/package/$hp | grep -ioE "Cabal source package[)<>/lia href=\"]+\/package\/.+\.cabal" | grep -ioE "\/package.+")
	command="cblrepo add --patchdir patches --cbl-url $hackage_url$cabal_file"
	echo $command
	eval $command
done

i=1
for hp in ${hackage_packages_file}; do
	command="cblrepo pkgbuild --ghc-version 7.8.2 --patchdir patches $hp"
	echo "($i/${#hackage_packages_file}) $command"
	eval $command
	(( i+=1 ))
done

for pkg in ${hackage_packages_file}; do
  hpkg=haskell-$pkg
  command1="./makeahpkg $hpkg"
  command2="./makeahpkg -a i686 $hpkg"

  eval $command1
  eval $command2
done

Neat!

Check out https://github.com/NixOS/cabal2nix if you're bored.

Thanks @fmap. I tried nixpkg's but working with this overhead, would require time since I'll have to give up on haskell packages from elsewhere. You should write up on setting up a nix based haskell package management system!

I really like the idea of nixos. I'll probably even switch, once I've the time to properly look into it. If you find the time, do write about your experience with nixos.

A few comments/suggestions:

• Making use of cblrepo sync removes the need to download Cabal files from hackage.
• Check out the versions command.
• The --patchdir patches is unnecessary, that's the default value.

My own usage goes something like this:

% cblrepo sync
% cblrepo versions -l <list of packages> > pkgs-to-add
% cblrepo add $(cat pkgs-to-add)
% cblrepo build $(sed -e 's/,.*//' pkgs-to-add) > build-order
% cblrepo pkgbuild --ghc-version 7.8.2 $(cat build-order)
% ./makeahpkg -- $(cat build-order)
% ./makeahpkg -a i686 -- $(cat build-order)