gobject-introspection: set package_type to shared-library, misc

[valgur]

Summary

Changes to recipe: gobject-introspection/[*]

Motivation

The correct pattern for gobject-introspection usage with Conan should really be:

def requirements(self):
    self.requires("gobject-introspection/1.78.1")

def build_requirements(self):
    self.tool_requires("gobject-introspection/<host_version>") # for g-ir-scanner

The .gir introspection data is architecture-specific and needs to have the arch of the host context.

For self.requires(...) to work without libs=True, headers=True, it makes more sense to use shared-library instead of application as the package type.

Details

The tool_requires for g-ir-scanner also needs a Python interpreter. self.requires("cpython/[~3.12]", build=True, visible=True, run=True) ensures that it's present in consuming recipes.

Also backports a patch for newer setuptools versions that have dropped distutils.msvccompiler.

---

• Read the contributing guidelines
• Checked that this PR is not a duplicate: list of PRs by recipe
• Tested locally with at least one configuration using a recent version of Conan

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