On 5/4/19 8:02 PM, amirou...@hyper.dev wrote: > On 2019-05-04 08:08, rendaw wrote: >> On 5/3/19 9:45 PM, amirou...@hyper.dev wrote: >>> Hello! >>> >>> >> (Whoops, replied with the wrong account.) >> >> Oh, this is great! I've actually been putting together a small Guix >> guide here: >> https://gitlab.com/rendaw/blog/blob/master/how_to_guix_for_those_who_dont.md >> >> >> It has a small Guile primer, but it doesn't go into depth or have any >> hands on examples like yours. My goal was to cover just enough so that >> people could understand Guix configs (or at least 90% of them), so no >> recursion, etc. I'm glad you got into records, I just kind of handwaved >> that away ("they're functions", not 100% sure this is correct either). > > That is good. The beginning looks like guix is not worthwhile and then > you continue in the second page with an introduction to guile and guix. > I find it nice actually. > > I spotted a minor error: > > (system* (string-append #$openssl "/bin/openssl") > "genrsa" "-out" private-key "2048")) > > > https://gitlab.com/rendaw/blog/blob/master/how_to_guix_for_those_who_dont.md#running-executables > > Indeed you can run programs like that but in guix it is preferred to run > with invoke, see the source :) > > Thanks for sharing!
Oh awesome, thanks! I saw the recommendation to use invoke (in the package guide?) but actually I'd like to know what the difference between invoke and system* are... the code above was something I grabbed from the Guix source somewhere (cups.scm?) I just checked now (defined in guix/build/utils.scm) and it looks like invoke raises an exception if the command has a non-zero exit, but otherwise they're the same. One more note for the guide I guess :D
