*Flags implies a list
slightly relevant:
> stdenv: start deprecating non-list configureFlags https://github.com/NixOS/nixpkgs/pull/173172
the makeInstalledTests function in `nixos/tests/installed-tests/default.nix` isn't available outside of nixpkgs so
it's not a breaking change
Along with the `socat` fix in the parent commit, this makes
the Flatpak’s installed tests finally pass again.
The tests seem to need slightly over 2G of disk space,
and it appears that the test suite was ported to Python 3 in 1.5.1:
2b6641575d
