Add an INSTALL.txt #1621
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Add an INSTALL.txt #1621
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…ord-lint, r=matthiaskrgr Add derive_ord_xor_partial_ord lint Fix rust-lang#1621 Some remarks: This PR follows the example of the analogous derive_hash_xor_partial_eq lint where possible. I initially tried using the `match_path` function to identify `Ord` implementation like the derive_hash_xor_partial_eq lint currently does, for `Hash` implementations but that didn't work. Specifically, the structs at the top level were getting paths that matched `&["$crate", "cmp", "Ord"]` instead of `&["std", "cmp", "Ord"]`. While trying to figure out what to do instead I saw the comment at the top of [clippy_lints/src/utils/paths.rs](https://github.com/rust-lang/rust-clippy/blob/f5d429cd762423901f946abd800dc2cd91366ccf/clippy_lints/src/utils/paths.rs#L5) that mentioned [this issue](rust-lang/rust-clippy#5393) and suggested to use diagnostic items instead of hardcoded paths whenever possible. I looked for a way to identify `Ord` implementations with diagnostic items, but (possibly because this was the first time I had heard of diagnostic items,) I was unable to find one. Eventually I tried using `get_trait_def_id` and comparing `DefId` values directly and that seems to work as expected. Maybe there's a better approach however? changelog: new lint: derive_ord_xor_partial_ord
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The installation procedure requires internet anyway, but some Unix denizens may be a little muffed at the idea a source package doesn't contain installation instructions! This is basically a slightly modified copy of the installation instructions in the tutorial.
Note, the windows bit is currently commented out as a FIXME, since the installer is broken. The link to the installer should be taken out of the tutorial as well - I'll submit a request for that shortly.
When Rust 0.2 or 1.0 or whatever comes out, this should be part of the distributed tarball. So it'll need to be added to the distribution. I can also do this.