Hi, I want to give Cuirass a try but I don't understand it (For the reference: talking about version 0.0.1-21.0b40dca). From the doc/curiass.texi I copy this snipped of a specification: '((#:name . "foo-master") (#:load-path-inputs . ("guix")) (#:package-path-inputs . ("packages")) (#:proc-input . "conf") (#:proc-file . "drv-list.scm") (#:proc . cuirass-jobs) (#:proc-args (subset . "foo")) (#:inputs . (((#:name . "guix") (#:url . "git://git.savannah.gnu.org/guix.git") (#:load-path . ".") (#:branch . "master") (#:no-compile? . #t)) ((#:name . "conf") (#:url . "git://my-personal-conf.git") (#:load-path . ".") (#:branch . "master") (#:no-compile? . #t)) * What should the procedure #:proc return? * What is the format of #:proc-args? Must this be an assoc-list or can it be just anything? * How is that used? Is it always the second parameter to the proc? * And is the first one always a reference to the store? In earlier examples like [0], the #:proc-file (then called #:file) could be a plain file lying around. Now it looks like it must be relative to one of its inputs, which is referenced by #:proc-input. Is this right? Is the old variant still possible? What forms can the inputs have? The documentation says it must always be git (either git:// or smart HTTPS). In examples/random.scm I saw also the form "file://", but when I tried it I got some error message (can't remember which one exactly). Is this allowed? Am I right that besides from an example this is underdocumented, or did I miss something? Björn [0] https://lists.gnu.org/archive/html/guix-devel/2017-03/msg00222.html