GNU bug report logs - #29181
[PATCH core-updates 0/1] Shrink Mesa

Previous Next

Full log

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludo <at> gnu.org>
To: guix-patches <at> gnu.org
Cc: Ludovic Courtès <ludo <at> gnu.org>
Subject: [PATCH core-updates 0/1] Shrink Mesa
Date: Mon,  6 Nov 2017 22:40:57 +0100

Hello Guix!

This patch divides the nar size of ‘mesa’ (as reported by ‘guix size’)
almost by a factor of four.  It does so by replacing hard links created
upon “make install” with symlinks.

The new post-install phase prints things like:

--8<---------------cut here---------------start------------->8---
starting phase `symlinks-instead-of-hard-links'
creating 7 symlinks to '/gnu/store/l1iwgjgp88snlzp9nafdpd0vvsqv7lsi-mesa-17.2.1/lib/dri/i915_dri.so'
creating 3 symlinks to '/gnu/store/l1iwgjgp88snlzp9nafdpd0vvsqv7lsi-mesa-17.2.1/lib/dri/i965_dri.so'
creating 1 symlinks to '/gnu/store/l1iwgjgp88snlzp9nafdpd0vvsqv7lsi-mesa-17.2.1/lib/dri/nouveau_drv_video.so'
creating 1 symlinks to '/gnu/store/l1iwgjgp88snlzp9nafdpd0vvsqv7lsi-mesa-17.2.1/lib/libXvMCnouveau.so.1.0.0'
creating 2 symlinks to '/gnu/store/l1iwgjgp88snlzp9nafdpd0vvsqv7lsi-mesa-17.2.1/lib/vdpau/libvdpau_nouveau.so.1.0.0'
phase `symlinks-instead-of-hard-links' succeeded after 0.0 seconds
--8<---------------cut here---------------end--------------->8---

The nar size does not reflect disk usage since deduplication would
recreate the hard links anyway, but it reflects how much we have to
transfer over the wire since the nar format does not represent hard
links.  A similar problem arose with Git a while back, see
<https://bugs.gnu.org/21949>.

I’d like to push to ‘core-updates’.

Thoughts?

Ludo’.

Ludovic Courtès (1):
  gnu: mesa: Use symlinks instead of hard links.

 gnu/packages/gl.scm | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

-- 
2.14.2

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.