argparse: generate .pc file with pkg-config module

It's less error-prone to use Meson's module rather than upstream's
template.

Author: bgilbert

releases.json

@@ -144,6 +144,7 @@
       "argparse"
     ],
     "versions": [
+      "3.2-2",
       "3.2-1",
       "3.1-2",
       "3.1-1",

subprojects/packagefiles/argparse/meson.build

@@ -3,7 +3,7 @@ project(
   'cpp',
   version: '3.2',
   license: 'MIT',
-  meson_version: '>=0.60.0',
+  meson_version: '>=0.49.0',
 )
 
 includes = include_directories(['include'])
@@ -17,17 +17,8 @@ argparse_dep = declare_dependency(
   include_directories: includes,
 )
 
-conf_data = configuration_data()
-conf_data.set('CMAKE_INSTALL_PREFIX', get_option('prefix'))
-conf_data.set('CMAKE_INSTALL_INCLUDEDIR', get_option('includedir'))
-conf_data.set('PROJECT_NAME', meson.project_name())
-conf_data.set('PROJECT_DESCRIPTION', 'A single header argument parser for C++17')
-conf_data.set('PROJECT_VERSION', meson.project_version())
-configure_file(
-  input: 'packaging/pkgconfig.pc.in',
-  output: 'argparse.pc',
-  configuration: conf_data,
-  install: true,
-  install_tag: 'devel',
+import('pkgconfig').generate(
+  name: meson.project_name(),
+  description: 'A single header argument parser for C++17',
   install_dir: get_option('datadir') / 'pkgconfig',
 )