1.0: Rewrite in Python #1564

Job	Run time
build (ubuntu-latest)	12m 5s
build (macos-latest)	6m 56s
build (self-hosted, macOS)	1s
build (nscloud-arm64)	8m 6s
generate-examples	5s
direnv (ubuntu-latest)	10m 41s
direnv (macos-latest)	10m 32s
direnv (self-hosted,macOS)	1s
direnv (nscloud-arm64)	7m 44s
zsh/fish (ubuntu-latest)	10m 40s
zsh/fish (macos-latest)	10m 41s
zsh/fish (self-hosted,macOS)	1s
zsh/fish (nscloud-arm64)	7m 40s
${{ matrix.example }} (${{ join(matrix.os) }})	1s
	1h 25m 14s

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