On 11/14/2013 10:44 AM, Alex Berg wrote:
[chexxor@nixos:~]$ nix-build /my-sources/pkgs/top-level/all-packages.nix -A heroku-toolbelt these derivations will be built: /nix/store/226khb1zh9kb94wwc27as2kxiyrqmqkj-heroku-toolbelt.drv building path(s) `/nix/store/ibh9r574dd14wd01xpmldy90c69z8lfh-heroku-toolbelt' building /nix/store/ibh9r574dd14wd01xpmldy90c69z8lfh-heroku-toolbelt unpacking sources punpacking source archive /nix/store/dfryky194z2bv179pd4jf3ny2gn9di02-heroku-client.tgz source root is heroku-client builder for `/nix/store/226khb1zh9kb94wwc27as2kxiyrqmqkj-heroku-toolbelt.drv' failed to produce output path `/nix/store/ibh9r574dd14wd01xpmldy90c69z8lfh-heroku-toolbelt' error: build of `/nix/store/226khb1zh9kb94wwc27as2kxiyrqmqkj-heroku-toolbelt.drv' failed
The error just means that the builder didn't create anything in the output path (passed in $out variable). But it doesn't seem you even wanted to do that yet ;-)
Q1: the script can't be used as it is, because it installs into wrong paths (/usr/local/...).
Q2: the source of the tarball doesn't really matter. It needs to always have the same hash. (You can even specify multiple sources, for the case that some are unavailable.)
If the program is a ruby script, then you need to patch its shebang to use ruby from nix store and not #!/usr/bin/ruby. For that it should be enough to have postInstall = "patchShebangs $out"; with ruby in buildInputs and assuming you get the scripts into $out in installPhase.
Vlada
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