Installed GHC expressions from nixpkgs

gistfile1.txt

➜  /Users/ageorges/nixpkgs git:(master) $ nix-store --gc --print-live | grep ghc
finding garbage collector roots...
determining live/dead paths...
/nix/store/0c0x6ikdd91xnv8ad5qg1cnjllcya6l1-ghc-7.4.2-x86_64-apple-darwin.tar.bz2.drv
/nix/store/0w52i4qmn9h3n9nh4az5qld25pfq80mg-ghc-7.8.4-src.tar.xz.drv
/nix/store/37d4r09fx6ipgp3kla9kpjr8krvqpnp6-ghc-7.10.1
/nix/store/3z09cx6hi7m0xpnjmm5c7pz35r1j3a29-ghc-7.8.4.drv
/nix/store/57w4xa43g7ilkdjd7mplrn8l3pvmyklf-ghc-paths-nix.patch
/nix/store/6bpp1dda46rv107j5zszhlv03gdbp90c-ghc-paths-0.1.0.9.tar.gz.drv
/nix/store/8qqqq11g317x8nc6js7vl72r320irchb-haskell-ghc-paths-0.1.0.9
/nix/store/aqqj91i45shgzm020mfhmfzqvsvplamd-haskell-ghc-paths-0.1.0.9
/nix/store/bilaz1v2dhzm7v640a6gh105fw8n5aaz-ghc-7.4.2-x86_64-apple-darwin.tar.bz2.drv
/nix/store/bxg7c3yrx7q61ykk47pq44qnhj3y96kp-ghc-7.4.2-binary.drv
/nix/store/c4ghclyfgahd8s1436bychhp5vgxinr2-haskell-quickcheck-io-0.1.1
/nix/store/cfgjacl6h8yrvmy6mg760lma4vqw1gjp-ghc-7.10.1-src.tar.xz.drv
/nix/store/cmvg35md6sq74zxwykswm3gasfvxh32x-ghc-7.8.4-src.tar.xz.drv
/nix/store/d5vq4il7v82in7548sh44lhy5sfdn860-ghc-paths-0.1.0.9.tar.gz.drv
/nix/store/f39cpfwnfs0vgcji1pgnih9x9mxisb0y-ghc-7.10.1.drv
/nix/store/favk626klqshhh25qlilh98ml12j662f-ghc-7.8.4.drv
/nix/store/fl499b2cdzy01d3zs1phg919ydcxvkks-ghc-7.4.2-binary.drv
/nix/store/gyhydikxwix9cnhazg7c8fsnf7l0ki2x-ghc-7.10.1-src.tar.xz.drv
/nix/store/hh9pj7kdxbdpl6dygzw9ayf0hwvizi4f-ghc-7.8.4.drv
/nix/store/j0b4vjwsmxaghc4zlbgkg6dpda465dnd-gettext-0.19.4
/nix/store/j1y7rggbf2f2l83jf6y0lhvkh9xrywa8-ghc-7.10.1.drv
/nix/store/j5hq7kk7kw9lhrwcx0z7j8brvznfbcx8-ghc-7.8.4-src.tar.xz.drv
/nix/store/jlzqjzv88kzvn94prd8apskyljqigjjx-ghc-7.10.1
/nix/store/l6gsnxwlnyjjilq2j9nr7swh6imbiz1i-ghc-paths-0.1.0.9.tar.gz.drv
/nix/store/ldvxx1zv9wzkw6vb7zwywhnkj57lxpb7-ghc-7.10.1-src.tar.xz.drv
/nix/store/niyw3gnfb4w3cw2sff6ckl22y8sm1ccm-haskell-ghc-paths-0.1.0.9.drv
/nix/store/qnc523ka8awwvw3imcswq102g3gm90xz-ghc-7.4.2-x86_64-apple-darwin.tar.bz2.drv
/nix/store/rwka3g6157dj636zsxvggzrkkh33pwil-ghc-7.10.1
/nix/store/s9hvvlshw02hl4vl51avfz9vm2zwmfwz-haskell-ghc-paths-0.1.0.9.drv
/nix/store/vdzk6jmxpm04081fnq0v0ra5s913ynhh-ghc-7.10.1.drv
/nix/store/vzl2qqagzfcghc1nwgbjq96lqy7sksdp-haskell-data-default-0.5.3
/nix/store/ygxph7q31hgw17yzk1jzgcnipxi93j15-ghc-7.4.2-binary.drv
/nix/store/z5cq8rba4v0qw9crnmfv89d3264j4xsa-haskell-ghc-paths-0.1.0.9
/nix/store/zdsf2dhk3428j748gkdgxhkayfgyrpd6-haskell-ghc-paths-0.1.0.9.drv