Hi, > users [of nixos-unstable] have to use a slightly modified version of > the script that looks as follows: > > | #! /usr/bin/env nix-shell > | #! nix-shell -i runghc -p "haskellPackages.ghcWithPackages (p: [p.HTTP])" > [...]
it turns out that script won't work either. It seemed to work when I tested it on my machine, but that was only because I had "runghc" in $PATH already. Adding "--pure" reveals the issue: | #! /usr/bin/env nix-shell | #! nix-shell --pure -i runghc -p "haskellPackages.ghcWithPackages (p: [p.HTTP])" | | import Network.HTTP | | main = do | resp <- Network.HTTP.simpleHTTP (getRequest "http://nixos.org/";) | body <- getResponseBody resp | print (take 100 body) When run, that script fails as follows: $ /tmp/test bash: exec: runghc: not found The exact same mechanism works fine in a normal shell, however: $ nix-shell --pure -p "haskellPackages.ghcWithPackages (p: [p.HTTP])" --run "ghc-pkg list HTTP" /nix/store/qxwql6in0v13i83p8vrvm7ma9i2aash4-ghc-7.10.1/lib/ghc-7.10.1/package.conf.d HTTP-4000.2.19 I've tried for a while now, but I could not figure out how to make a non-trivial Haskell script work with nix-shell. Best regards, Peter _______________________________________________ nix-dev mailing list [email protected] http://lists.science.uu.nl/mailman/listinfo/nix-dev
