A patch is attached to this email.

ThispatchupdatesmanybuildtoolsandrelatedpackagesinGNUrepo,the
formerincludinggn,meson,cmake,muon,osc,genie,pdpmake,andninja,the
latterincludingcpm-cmake,bear,compiledb,andpython-pyproject-medatada.

Thispatchalsodeprecatespython-meson-pythoninfavorofmeson-python.All
packagesthatusepython-meson-pythonaremanuallymitigated.
Rationale:Theyrefertothesamepackage.Thename"meson-python"ispreferred
becauseupstreamname"meson-python"alreadycontainsa"python".Otherpackage
managers (e.g. pacmanforArch) also use the name "meson-python". Only 4
packagesinGNUrepouse"python-meson-python",comparedtomorethan10
"meson-python"s.

Someothermodificationsaremade.Seecommitmessagefordetailedinformation.

Allpackagesinvolved,exceptforcmakeandosc,aretestedandcanbe
successfullybuiltonmysystem.
cmakeandoscrequirerusttobuild,whichtakesahugeamountoftimeto
bootstraponmycomputer.TheGuixserverdidn't seem to have substitutes whenI tested. Sorry about that.

This is my first time submitting a patch. What should be many commits are
bulked together in a single commit because my local edit history ain't that
clean. Apology in advance if inconvience is caused. Feel free to modify the
patch.