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Re: How to "tell" a package so extent an environment variable?
From: |
Marius Bakke |
Subject: |
Re: How to "tell" a package so extent an environment variable? |
Date: |
Sun, 11 Dec 2016 18:41:50 +0100 |
User-agent: |
Notmuch/0.23.3 (https://notmuchmail.org) Emacs/25.1.1 (x86_64-unknown-linux-gnu) |
Hartmut Goebel <address@hidden> writes:
> Hi,
>
> I'm working on some PHP extension packages.
>
> In PHP extensions need to be enabled by listing in some .ini file and
> php needs to be told which .ini files to read. The later can be done by
> setting the environment variable PHP_INI_SCAN_DIR when running php (or
> related). This is much like setting PYTHONPATH for python modules.
>
> So I need to "tell" the package so extent PHP_INI_SCAN_DIR when it gets
> installed.
>
> How can this be done without creating a php-build-system?
If PHP can read multiple INI files (which the variable name leads me to
believe), you can add a 'native-search-path' to the PHP expression and
have each extension register an INI file in this directory.
For example:
(define-public php
[...]
(native-search-paths
(list (search-path-specification
(variable "PHP_INI_SCAN_DIR")
;; This might not be the best place to add them.
(files '("php/ini")))))
And then, for extensions, they should install an INI file that enables
them to $out/php/ini. When users install PHP, PHP_INI_SCAN_DIR will be
pointed towards the users' .guix-profile/php/ini directory.
Would this approach work?
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