Remove manual req. of python3dist(toml), package the [toml] extra instead

On Python 3.11+ python3dist(toml) is not needed.
The toml extra only exists for its provides there.
With older Python (e.g. on Fedora 36),
it brings python3.10dist(toml) and hence it is Recommended to preserve
current default behavior.

The Recommends can be safely removed when this is no longer being
ever merged into dist-git for older Fedoras.

But it can also stay forever.

micropipenv.spec

@@ -1,6 +1,6 @@
 Name:           micropipenv
 Version:        1.4.2
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        A simple wrapper around pip to support Pipenv and Poetry files
 
 License:        LGPLv3+
@@ -12,19 +12,21 @@ BuildRequires:  python3-devel
 
 %{?python_provide:%python_provide python3-%{name}}
 
-Requires:       python3dist(toml)
+Recommends:     micropipenv+toml
 
 %description
 A lightweight wrapper for pip to support Pipenv and Poetry lock files or
 converting them to pip-tools compatible output.
 
+%pyproject_extras_subpkg -n %{name} toml
+
 %prep
 %autosetup
 # Remove shebang line from the module
 sed -i '1{\@^#!/usr/bin/env python@d}' %{name}.py
 
 %generate_buildrequires
-%pyproject_buildrequires -r -t
+%pyproject_buildrequires -r -t -x toml
 
 %build
 %pyproject_wheel
@@ -42,6 +44,10 @@ sed -i '1{\@^#!/usr/bin/env python@d}' %{name}.py
 %{_bindir}/micropipenv
 
 %changelog
+* Mon Oct 03 2022 Miro Hrončok <mhroncok@redhat.com> - 1.4.2-2
+- Remove manual requirement of python3dist(toml),
+  package and Recommend the [toml] extra instead
+
 * Tue Aug 02 2022 Lumír Balhar <lbalhar@redhat.com> - 1.4.2-1
 - Update to 1.4.2
 Resolves: rhbz#2110900