[glib: 1/2] meson: simplify lookup of python command

[Philip Withnall <pwithnall src gnome org>]

commit 4a4d9eb6624b69328fa9749236c0b4236932ceb8
Author: Eli Schwartz <eschwartz archlinux org>
Date:   Mon Mar 7 22:03:03 2022 -0500

    meson: simplify lookup of python command
    
    It can be treated like any other command, we don't need a full blown
    module capable of building extensions just to get an ExternalProgram
    executable that can be used to run scripts.
    
    Since find_program has a builtin kwarg for requiring a given version, we
    can avoid manually coding some checks and emitting a custom error.

 meson.build | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)
---
diff --git a/meson.build b/meson.build
index e0b14319f..e87433a67 100644
--- a/meson.build
+++ b/meson.build
@@ -2271,16 +2271,10 @@ endif
 
 glib_conf.set('HAVE_PROC_SELF_CMDLINE', have_proc_self_cmdline)
 
-python = import('python').find_installation('python3')
+python = find_program('python3', version: '>=3.5')
 # used for '#!/usr/bin/env <name>'
 python_name = 'python3'
 
-python_version = python.language_version()
-python_version_req = '>=3.5'
-if not python_version.version_compare(python_version_req)
-  error('Requires Python @0@, @1@ found.'.format(python_version_req, python_version))
-endif
-
 # Determine which user environment-dependent files that we want to install
 have_bash = find_program('bash', required : false).found() # For completion scripts
 bash_comp_dep = dependency('bash-completion', version: '>=2.0', required: false)