Build

Fix some issues with `virtual_specs` #1739

Job	Run time
ubuntu-latest, Python 3.8, conda-standalone	11m 12s
ubuntu-latest, Python 3.9, conda-standalone	11m 31s
ubuntu-latest, Python 3.10, conda-standalone-nightly	11m 28s
ubuntu-latest, Python 3.11, micromamba	9m 57s
ubuntu-latest, Python 3.12, conda-standalone	10m 53s
macos-13, Python 3.8, conda-standalone-nightly	51m 52s
macos-latest, Python 3.11, conda-standalone	20m 16s
macos-latest, Python 3.12, micromamba	19m 59s
windows-latest, Python 3.8, conda-standalone	27m 44s
windows-latest, Python 3.9, conda-standalone-nightly	29m 58s
windows-latest, Python 3.10, conda-standalone	29m 17s
windows-latest, Python 3.11, conda-standalone-nightly	30m 2s
windows-latest, Python 3.12, conda-standalone	29m 3s
Report failures	0s
Canary Build	0s
	4h 53m 12s

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