On Mon, Aug 28, 2017 at 10:32:41PM +0200, Ricardo Wurmus wrote: > > Ricardo Wurmus <rek...@elephly.net> writes: > > > You could also access the arguments of another package with > > “package-arguments”. Using the “properties” field isn’t pretty because > > it is a free form alist. > > > > You can use “find-tail” to jump to the keyword in “arguments” and then > > pick the following value. > > Here an example: > > --8<---------------cut here---------------start------------->8--- > (define (assoc-args-ref pkg key) > "Return the value associated with KEY in the arguments of package PKG, > or #F if there is no such key." > (let ((ref (find-tail (cut eq? <> key) > (package-arguments pkg)))) > (and=> ref second))) > > (assoc-args-ref golang-github-com-audriusbutkevicius-go-nat-pmp > #:import-path) > > => "github.com/AudriusButkevicius/go-nat-pmp" > --8<---------------cut here---------------end--------------->8---
Thanks, this is a nice example. I realized that the GOPATH variable can be a list of directories, like PATH, so I'm working in that direction instead of building the symlink union.
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