haskell: bring recent stable ghc and cabal-install from PPA

helpers/make-cabal-install-1.20

+#!/bin/sh
+#
+#    Copyright (C) 2015 fr33domlover <fr33domlover@riseup.net>
+#
+#    This program is free software; you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation; either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+VERSION=1
+EXTERNAL='deb-src http://ppa.launchpad.net/hvr/ghc/ubuntu $UPSTREAM main'
+SIGNKEY=FF3AEACEF6F88286
+
+. ./config
+
+changelog "Bring recent cabal-install from PPA"
+
+compile

helpers/make-ghc-7.8.3

+#!/bin/sh
+#
+#    Copyright (C) 2015 fr33domlover <fr33domlover@riseup.net>
+#
+#    This program is free software; you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation; either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+VERSION=1
+EXTERNAL='deb-src http://ppa.launchpad.net/hvr/ghc/ubuntu $UPSTREAM main'
+SIGNKEY=FF3AEACEF6F88286
+
+. ./config
+
+sed -i 's/ghc-7\.6\.3/ghc/g' debian/control
+
+changelog "Bring recent GHC from PPA"
+
+compile