Re: [gentoo-science] BLAS and LAPACK dependecy resolution

[Markus Oehme <oehme.markus@gmx.de>]

Hi,

I did the following, which seems to have done the trick:
1. add the package.mask entries
2. merge eselect::science
3. remerge all libraries that come from the science overlay (everything from
   'eix -I --in-overlay science')
4. remove /usr/lib/libblas.so (which was kept by preserve-libs)
   that is actually do 'rm /usr/lib/libblas.so'
5. remerge lapack-reference (which provided /usr/lib/libblas.so)
6. remerge umfpack (which depended on /usr/lib/libblas.so)

In between 3. and 4. I tried 'emerge @preserved-rebuild' which did not
improve the situation (i.e. the preserved /usr/lib/libblas.so was still used
by the newly built packages).

Step 6 is probably collateral damage which is hard to formalize.

> [2 blas.mask <text/plain (base64)>]

The entry >=app-shells/bash-completion-2.1 should probably be added, since
the newer versions require >=eselect-1.3.8 which is only available in the
main tree.

Once the mask file is available via overlay it would probably be nice to
have the above steps documented. I would volunteer to write a short piece
for the wiki (but afaik I'm not allowed to edit
https://wiki.gentoo.org/wiki/Project:Science/Overlay so somebody else would
have to add it).


        Markus

-- 
Aoccdrnig to a threoy, it deosn't mttaer in waht oredr the ltteers in a wrod
are, the olny iprmoatnt tihng is taht the frist and lsat ltteer are in the
rghit pclae. The rset can be a taotl mses and you can sitll raed it in msot
csaes. Tihs is bcuseae the huamn mnid deos not raed ervey lteter by istlef,
but the wrod as a wlohe. And I awlyas thought slpeling was ipmorantt.