funman300
13d1d013e9
Adds .cargo/config.toml setting `rustc-wrapper = "sccache"` so cold rebuilds (CI, fresh checkouts, post-`cargo clean`) replay previously- compiled crates from disk instead of recompiling. Warm incremental builds are unaffected — cargo's own target/ cache dominates there. Cache lives at `.sccache-cache/` inside the project (gitignored). The [env] entry uses `force = false` so a developer-set $SCCACHE_DIR in their shell wins, matching whichever directory the sccache daemon already adopted. Requires sccache on PATH. Install: `pacman -S sccache`, `brew install sccache`, or `cargo install sccache --locked`. Bypass without editing: `RUSTC_WRAPPER= cargo build`.
32 lines
1.2 KiB
TOML
32 lines
1.2 KiB
TOML
# Project-wide cargo configuration.
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#
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# Routes every rustc invocation through `sccache` so cold rebuilds and
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# fresh checkouts (CI, new dev box, after a `cargo clean`) replay
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# previously-compiled crates from a local on-disk cache rather than
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# recompiling them. Warm incremental builds still go through cargo's
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# own `target/` cache, which dominates locally — sccache buys you the
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# big wins on cold paths.
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#
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# Requires sccache on PATH. Install it once per machine:
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#
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# Arch : pacman -S sccache
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# macOS : brew install sccache
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# Cargo : cargo install sccache --locked
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#
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# Without sccache the build fails with "rustc-wrapper not found". To
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# bypass this config without editing the file, prepend
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# `RUSTC_WRAPPER= ` (empty value) to your cargo command:
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#
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# RUSTC_WRAPPER= cargo build
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#
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[build]
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rustc-wrapper = "sccache"
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# Project-local cache so the shared dev box (or a Docker volume) keeps
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# the artefacts isolated per checkout instead of mixing them in
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# `~/.cache/sccache`. Set with `force = false` so a developer-set
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# `SCCACHE_DIR` in their shell wins — important because the sccache
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# daemon, once started, sticks with whichever directory it saw first.
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[env]
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SCCACHE_DIR = { value = ".sccache-cache", relative = true, force = false }
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