tests

Editable installs improvements #2292

Job	Run time
cygwin (3.9)	1m 58s
homebrew (3.8)	2m 5s
mypy	12s
homebrew (3.11)	2m 5s
msvc (3.11)	1m 55s
pyston (3.8)	1m 10s
test (ubuntu, 3.7)	1m 16s
test (ubuntu, 3.12)	1m 36s
test (macos, 3.7)	2m 4s
test (macos, 3.12)	2m 8s
test (windows, 3.7)	33s
test (windows, 3.12)	37s
test (ubuntu, pypy-3.9)	2m 8s
test (ubuntu, pypy-3.10)	2m 9s
test (ubuntu, 3.8)	1m 24s
test (ubuntu, 3.9)	3m 43s
test (ubuntu, 3.10)	1m 24s
test (ubuntu, 3.11, ~=0.63.3)	1m 34s
test (ubuntu, 3.11, ~=0.64.0)	1m 38s
test (ubuntu, 3.11, ~=1.0.0)	1m 25s
test (ubuntu, 3.11, ~=1.1.0)	1m 26s
test (ubuntu, 3.12, @git+https://github.com/mesonbuild/meson.git)	1m 48s
test (windows, 3.12, @git+https://github.com/mesonbuild/meson.git)	33s
	36m 51s

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