perf(dev): share Cargo package cache across worktrees - #199
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johnmatthewtennant wants to merge 4 commits into
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perf(dev): share Cargo package cache across worktrees#199johnmatthewtennant wants to merge 4 commits into
johnmatthewtennant wants to merge 4 commits into
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Signed-off-by: John Tennant <jtennant@block.xyz>
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September 3, 2026 19:24
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September 3, 2026 19:25
Signed-off-by: John Tennant <jtennant@block.xyz>
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Summary
Hermit currently gives each Berd worktree its own
CARGO_HOME. That duplicates registry and Git dependency downloads and gives dependency sources checkout-specific absolute paths.Use
${HOME}/.cache/berd/cargo-homeas Berd's stable Cargo package home and keep itsbindirectory onPATH. Cargo's package-cache locking supports concurrent access. Cargo target directories remain independently configured and are not shared by this change.Verification
Two fresh macOS worktrees activated Hermit against one initially empty shared Cargo home and built concurrently without package-cache errors. Both resolved the same
CARGO_HOME; the second worktree reused all 59 dependencies in focusedcargo checkandcargo test --no-runruns with no downloads.