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69dcb1a2c0
It would be reasonable to have a Ruby program that depends on some other
program being in the PATH. In this case, the obvious thing to do would
be something like this:
bundlerApp {
# ...
buildInputs = [ makeWrapper ];
postBuild = ''
wrapProgram "$out/bin/foo" \
--prefix PATH : ${lib.makeBinPath [ dep ]}
'';
}
However, this doesn't work, because even though it just forwards most of
its arguments to `runCommand`, `bundlerApp` won't take a `buildInputs`
parameter. It doesn't even specify its own `buildInputs`, which means
that the `scripts` parameter to `bundlerApp` (which depends on
`makeWrapper`) is completely broken, and, as far as I can tell, has been
since its inception. I've added a `makeWrapper` build input if the
scripts parameter is present to fix this.
I've added a `buildInputs` option to `bundlerApp`. It's also passed
through to bundled-common because `postBuild` scripts are run there as
well. This actually means that in this example we'd end up going through
two layers of wrappers (one from `bundlerApp` and one from
bundled-common), but that has always been the case and isn't likely to
break anything. That oddity does suggest that it might be prudent to
not forward `postBuild` to bundled-common (or to at least use a
different option) though...
FWIW, as far as I can tell no package in nixpkgs uses either the
`scripts` or `postBuild` options to `bundlerApp`.
63 lines
2.3 KiB
Nix
63 lines
2.3 KiB
Nix
{ lib, stdenv, callPackage, runCommand, makeWrapper, ruby }@defs:
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# Use for simple installation of Ruby tools shipped in a Gem.
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# Start with a Gemfile that includes `gem <toolgem>`
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# > nix-shell -p bundler bundix
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# (shell)> bundle lock
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# (shell)> bundix
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# Then use rubyTool in the default.nix:
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# rubyTool { pname = "gemifiedTool"; gemdir = ./.; exes = ["gemified-tool"]; }
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# The 'exes' parameter ensures that a copy of e.g. rake doesn't polute the system.
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{
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# use the name of the name in question; its version will be picked up from the gemset
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pname
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# gemdir is the location of the Gemfile{,.lock} and gemset.nix; usually ./.
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, gemdir
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# Exes is the list of executables provided by the gems in the Gemfile
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, exes ? []
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# Scripts are ruby programs depend on gems in the Gemfile (e.g. scripts/rails)
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, scripts ? []
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, ruby ? defs.ruby
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, gemfile ? null
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, lockfile ? null
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, gemset ? null
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, preferLocalBuild ? false
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, allowSubstitutes ? false
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, installManpages ? true
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, meta ? {}
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, buildInputs ? []
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, postBuild ? ""
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, gemConfig ? null
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}@args:
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let
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basicEnv = (callPackage ../bundled-common {}) args;
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cmdArgs = removeAttrs args [ "pname" "postBuild" "gemConfig" ] // {
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inherit preferLocalBuild allowSubstitutes; # pass the defaults
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buildInputs = buildInputs ++ lib.optional (scripts != []) makeWrapper;
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};
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in
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runCommand basicEnv.name cmdArgs ''
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mkdir -p $out/bin
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${(lib.concatMapStrings (x: "ln -s '${basicEnv}/bin/${x}' $out/bin/${x};\n") exes)}
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${(lib.concatMapStrings (s: "makeWrapper $out/bin/$(basename ${s}) $srcdir/${s} " +
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"--set BUNDLE_GEMFILE ${basicEnv.confFiles}/Gemfile "+
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"--set BUNDLE_PATH ${basicEnv}/${ruby.gemPath} "+
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"--set BUNDLE_FROZEN 1 "+
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"--set GEM_HOME ${basicEnv}/${ruby.gemPath} "+
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"--set GEM_PATH ${basicEnv}/${ruby.gemPath} "+
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"--run \"cd $srcdir\";\n") scripts)}
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${lib.optionalString installManpages ''
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for section in {1..9}; do
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mandir="$out/share/man/man$section"
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find -L ${basicEnv}/${ruby.gemPath}/gems/${basicEnv.name} \( -wholename "*/man/*.$section" -o -wholename "*/man/man$section/*.$section" \) -print -execdir mkdir -p $mandir \; -execdir cp '{}' $mandir \;
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done
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''}
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${postBuild}
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''
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