all messages for Guix-related lists mirrored at yhetil.org
 help / color / mirror / code / Atom feed
From: Liliana Marie Prikler <liliana.prikler@gmail.com>
To: Efraim Flashner <efraim@flashner.co.il>, 50501@debbugs.gnu.org
Subject: bug#50501: packages->manifest can lose the desired package output
Date: Fri, 10 Sep 2021 16:26:25 +0200	[thread overview]
Message-ID: <f6914d44384d3e611728d8a8ab47d586c0a04101.camel@gmail.com> (raw)
In-Reply-To: <YTsmnckiT+cq9vly@3900XT>

Hi Efraim,

Am Freitag, den 10.09.2021, 12:34 +0300 schrieb Efraim Flashner:
> I've been fighting my manifest to try to get "git" and "git:send-
> email" both included, while using package transformations. For the
> sake of brevity, here's a stripped down version of my manifest:
> 
> (packages->manifest
>   (map specification->package+output
>     '("git" "git:send-email")))
> 
> Here's what I learned from some experimentation:
> 
> (cmd)scheme@(guile-user)> (specification->package+output "git:send-
> email")
> $14 = #<package git@2.32.0 gnu/packages/version-control.scm:176
> 7f730e918320>
> $15 = "send-email"
> (ins)scheme@(guile-user)> (list (specification->package+output
> "git:send-email"))
> $16 = (#<package git@2.32.0 gnu/packages/version-control.scm:176
> 7f730e918320>)
> (ins)scheme@(guile-user)> (list (specification->package+output
> "git"))
> $17 = (#<package git@2.32.0 gnu/packages/version-control.scm:176
> 7f730e918320>)
> 
> Meanwhile, (specifications->manifest '("git" "git:send-email")) does
> actually return a manifest with both the "out" and the "send-email"
> outputs of git.
> 
> (package->manifest-entry (specification->package+output "git:send-
> email"))
> returns a manifest entry for "git:out" and
> (package->manifest-entry git "send-email") returns a manifest entry
> for
> "git:send-email".
I think for this use of specification->package+output you need to
compose it with list like (compose list specification->package+output). 
The reason you observe this behaviours is that specification-
>package+output returns multiple values, whereas package->manifest-
entry expects a single value which is either a package or a list of the
form (package "output").

Regards






  reply	other threads:[~2021-09-10 17:09 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-10  9:34 bug#50501: packages->manifest can lose the desired package output Efraim Flashner
2021-09-10 14:26 ` Liliana Marie Prikler [this message]
2021-09-14  9:55   ` Ludovic Courtès

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=f6914d44384d3e611728d8a8ab47d586c0a04101.camel@gmail.com \
    --to=liliana.prikler@gmail.com \
    --cc=50501@debbugs.gnu.org \
    --cc=efraim@flashner.co.il \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
Code repositories for project(s) associated with this external index

	https://git.savannah.gnu.org/cgit/guix.git

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.