meson_version should be >=0.50.0
According to meson, libgweather is using features from meson 0.50 but only requiring 0.48:
WARNING: Project targetting '>= 0.48.0' but tried to use feature introduced in '0.50.0': install arg in configure_file
Configuring gweather-version.h using configuration
Found pkg-config: /usr/bin/pkg-config (0.29)
Program xmllint found: YES (/usr/bin/xmllint)
Program meson/meson_post_install.py found: YES (/home/diego/Projects/jhbuild_checkout/libgweather/meson/meson_post_install.py)
Build targets in project: 18
WARNING: Project specifies a minimum meson_version '>= 0.48.0' but uses features which were added in newer versions:
* 0.50.0: {'install arg in configure_file'}
I'm attaching a MR.