From: Suhail Singh <suhailsingh247@gmail.com>
To: Guix-devel mailing list <guix-devel@gnu.org>
Cc: Suhail Singh <suhailsingh247@gmail.com>
Subject: Clarification regd. native-search-paths and search-paths
Date: Sat, 05 Oct 2024 14:19:16 -0400 [thread overview]
Message-ID: <87zfnipg4b.fsf@gmail.com> (raw)
Hello Guix,
Per the manual:
#+caption: [[info:guix#Search Paths][guix#Search Paths]]
#+begin_quote
What this ‘native-search-paths’ field says is that, when the ‘python’
package is used, the ‘GUIX_PYTHONPATH’ environment variable must be
defined to include all the ‘lib/python/3.9/site-packages’
sub-directories encountered in its environment. (The ‘native-’ bit
means that, if we are in a cross-compilation environment, only native
inputs may be added to the search path; *note ‘search-paths’: package
Reference.)
#+end_quote
Does "used" above refer to runtime usage?
If so, in that example, why is native-search-paths used instead of
search-paths? I would think that in order to have appropriate runtime
behaviour while supporting cross-compilation, we would want to use
search-paths instead. And yet, it seems, the recommendation seems to be
to favour native-search-paths in general:
#+caption: [[info:guix#package Reference][guix#package Reference]]
#+begin_quote
As for inputs, the distinction between ‘native-search-paths’
and ‘search-paths’ only matters when cross-compiling. In a
cross-compilation context, ‘native-search-paths’ applies
exclusively to native inputs whereas ‘search-paths’ applies
only to host inputs.
Packages such as cross-compilers care about target inputs—for
instance, our (modified) GCC cross-compiler has
‘CROSS_C_INCLUDE_PATH’ in ‘search-paths’, which allows it to
pick ‘.h’ files for the target system and _not_ those of
native inputs. For the majority of packages though, only
‘native-search-paths’ makes sense.
#+end_quote
How does one determine which of native-search-paths or search-paths is
appropriate in a given context?
--
Suhail
next reply other threads:[~2024-10-05 18:19 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-05 18:19 Suhail Singh [this message]
2024-10-06 17:49 ` Clarification regd. native-search-paths and search-paths Felix Lechner via Development of GNU Guix and the GNU System distribution.
2024-10-06 22:00 ` Suhail Singh
2024-10-07 1:08 ` Felix Lechner via Development of GNU Guix and the GNU System distribution.
2024-10-07 2:58 ` Suhail Singh
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