workspace: avoid duplicates when pulling dependency from git #696
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When pulling dependencies using a `patch.crates-io` to a git dependency
like:
```
[dependencies]
sha1 = "0.11.0-rc.0"
[patch.crates-io]
sha1-checked = { git = "https://github.com/RustCrypto/hashes.git" }
```
Cargo will duplicate sha1 dependency:
```
[[package]]
name = "sha1"
version = "0.11.0-rc.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6f9318facddf9ac32a33527066936837e189b3f23ced6edc1603720ead5e2b3d"
dependencies = [
"cfg-if",
"cpufeatures",
"digest 0.11.0-rc.0",
]
[[package]]
name = "sha1"
version = "0.11.0-rc.0"
source = "git+https://github.com/RustCrypto/hashes.git#2bcfb5a0a849503ed73b190538787a00c58baada"
dependencies = [
"cfg-if",
"cpufeatures",
"digest 0.11.0-rc.0",
]
[[package]]
name = "sha1-checked"
version = "0.11.0-pre"
source = "git+https://github.com/RustCrypto/hashes.git#2bcfb5a0a849503ed73b190538787a00c58baada"
dependencies = [
"digest 0.11.0-rc.0",
"sha1 0.11.0-rc.0 (git+https://github.com/RustCrypto/hashes.git)",
"zeroize",
]
```
This causes issues further down the line, for example when the
downstream client is built with nix which does not support two copies of
the same crate/version tuple.
This switches the local overrides using a workspace patch instead which
are not used when the crate is consumed via git.
tarcieri
approved these changes
Jun 4, 2025
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When pulling dependencies using a
patch.crates-ioto a git dependency like:Cargo will duplicate sha1 dependency:
This causes issues further down the line, for example when the downstream client is built with nix which does not support two copies of the same crate/version tuple.
This switches the local overrides using a workspace patch instead which are not used when the crate is consumed via git.