Deduplicate editables during install commands #4353

Job	Run time
build binary \| linux	1m 11s
build binary \| windows	1m 21s
build binary \| macos x86_64	1m 27s
build binary \| macos aarch64	1m 6s
cargo clippy (ubuntu-latest)	51s
cargo fmt	29s
cargo clippy (windows-latest)	4m 41s
cargo test \| ubuntu	3m 19s
check windows trampoline	3m 54s
cargo test \| windows	8m 37s
cargo test \| macos	4m 52s
check cache \| macos aarch64	11s
check system \| python on macos aarch64	13s
check system \| homebrew python on macos aarch64	15s
check system \| python on centos	49s
check system \| alpine	1m 9s
check cache \| ubuntu	45s
check system \| amazonlinux	22s
check system \| python on debian	47s
check system \| python on fedora	1m 29s
check system \| python via pyenv	1m 45s
check system \| pypy on ubuntu	21s
check system \| pyston	3m 47s
check system \| python on ubuntu	12s
check system \| python3.12 via chocolatey	1m 7s
check system \| python3.10 on windows	37s
check system \| python3.13 on windows	1m 6s
check system \| conda3.8 on linux	40s
check system \| python3.10 on windows x86	47s
check system \| conda3.11 on linux	45s
check system \| conda3.8 on windows	2m 21s
check system \| conda3.11 on windows	2m 32s
check system \| conda3.8 on macos	41s
check system \| conda3.11 on macos	39s
check system \| python on macos x86_64	23s
	55m 31s

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