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readme: add parens where needed #213

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16 changes: 8 additions & 8 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -179,16 +179,16 @@ Running `nix develop` will create a shell with the default beta Rust toolchain i
- Latest stable or beta rust profile, **with extra components or target support**.

```nix
rust-bin.stable.latest.default.override {
(rust-bin.stable.latest.default.override {
extensions = [ "rust-src" ];
targets = [ "arm-unknown-linux-gnueabihf" ];
}
})
```

- Latest **nightly** rust profile.

```nix
rust-bin.selectLatestNightlyWith (toolchain: toolchain.default) # or `toolchain.minimal`
(rust-bin.selectLatestNightlyWith (toolchain: toolchain.default)) # or `toolchain.minimal`
```

*Note: Don't use `rust-bin.nightly.latest`. Your build would fail when some components missing on some days.
Expand All @@ -197,10 +197,10 @@ Running `nix develop` will create a shell with the default beta Rust toolchain i
- Latest **nightly** rust profile, **with extra components or target support**.

```nix
rust-bin.selectLatestNightlyWith (toolchain: toolchain.default.override {
(rust-bin.selectLatestNightlyWith (toolchain: toolchain.default.override {
extensions = [ "rust-src" ];
targets = [ "arm-unknown-linux-gnueabihf" ];
})
}))
```

- A specific version of rust:
Expand All @@ -216,20 +216,20 @@ Running `nix develop` will create a shell with the default beta Rust toolchain i
you can simply use `fromRustupToolchainFile` to get the customized toolchain derivation.

```nix
rust-bin.fromRustupToolchainFile ./rust-toolchain
(rust-bin.fromRustupToolchainFile ./rust-toolchain)
```

- Toolchain with specific rustc git revision.

This is useful for development of rust components like [MIRI][miri], which requires a specific revision of rust.
```nix
rust-bin.fromRustcRev {
(rust-bin.fromRustcRev {
rev = "a2cd91ceb0f156cb442d75e12dc77c3d064cdde4";
components = {
rustc = "sha256-x+OkPVStX00AiC3GupIdGzWluIK1BnI4ZCBbg72+ZuI=";
rust-src = "sha256-13PpzzYtd769Xkb0QzHpNfYCOnLMWFolc9QyYq98z2k=";
};
}
})
```

*Warning: This may not always work (including the example below) since upstream CI periodically purges old artifacts.*
Expand Down