Distribute using rustup rather than Cargo

[nrc]

No description provided.

[nrc]

cc rust-dev-tools/dev-tools-team#17

[crumblingstatue]

I see that rustup now distributes rustfmt-preview, which comes with cargo-fmt. However, cargo fails to recognize fmt as a subcommand. Is support for this just not implemented yet, or is there something wrong on my end?

[nrc]

It does not quite work yet, sorry (even using rustfmt does not work properly), but it should be done soon...

[jonhoo]

@crumblingstatue fwiw, I worked around by linking rustup into /usr/bin (or anywhere on your $PATH) with the appropriate names:

$ ls -la /usr/bin/{cargo-fmt,rustfmt}
lrwxrwxrwx 1 root root 15 Dec 20 21:49 /usr/bin/cargo-fmt -> /usr/bin/rustup*
lrwxrwxrwx 1 root root 15 Dec 20 21:49 /usr/bin/rustfmt -> /usr/bin/rustup*

[jonhoo]

@nrc one question though: how is the rustfmt-preview that is now included with rustup updated?

[nrc]

@jonhoo rustup update will update it

[jonhoo]

Hmm, that doesn't seem to be the case for me?

$ ls -l /usr/bin/rustfmt
lrwxrwxrwx 1 root root 15 Jan  9 14:28 /usr/bin/rustfmt -> /usr/bin/rustup*
$ rustfmt +nightly --version
0.3.4-nightly (6714a44 2017-12-23)
$ rustup update
...
info: syncing channel updates for 'nightly-x86_64-unknown-linux-gnu'
info: latest update on 2018-01-11, rust version 1.25.0-nightly (f62f77403 2018-01-10)
...
info: downloading component 'rustfmt-preview'
...
info: removing component 'rustfmt-preview'
...
info: installing component 'rustfmt-preview'
...

  nightly-x86_64-unknown-linux-gnu updated - rustc 1.25.0-nightly (f62f77403 2018-01-10)

$ rustfmt +nightly --version
0.3.4-nightly (6714a44 2017-12-23)

[jonhoo]

@nrc ^

[topecongiro]

@jonhoo It looks to me that rustfmt was correctly up to date.

[jonhoo]

Ohh, I guess it only pulls released versions, not the latest git version. That makes sense.

[andersk]

The rustfmt-preview component disappeared from the nightly toolchain a few days ago.

$ rustup default nightly-2018-01-14
…
  nightly-2018-01-14-x86_64-unknown-linux-gnu installed - rustc 1.25.0-nightly (e6072a7b3 2018-01-13)

$ rustup component add rustfmt-preview
info: downloading component 'rustfmt-preview'
  1.9 MiB /   1.9 MiB (100 %)   1.0 MiB/s ETA:   0 s                
info: installing component 'rustfmt-preview'

$ rustup default nightly-2018-01-15
…
  nightly-2018-01-15-x86_64-unknown-linux-gnu installed - rustc 1.25.0-nightly (3f92e8d89 2018-01-14)

$ rustup component add rustfmt-preview
error: toolchain 'nightly-2018-01-15-x86_64-unknown-linux-gnu' does not contain component 'rustfmt-preview' for target 'x86_64-unknown-linux-gnu'

$ rustup default nightly
…
  nightly-x86_64-unknown-linux-gnu unchanged - rustc 1.25.0-nightly (0f9c78475 2018-01-17)

$ rustup component add rustfmt-preview
error: toolchain 'nightly-x86_64-unknown-linux-gnu' does not contain component 'rustfmt-preview' for target 'x86_64-unknown-linux-gnu'

[topecongiro]

rustfmt-preview is back since rustc 1.25.0-nightly (5965b7901 2018-01-19).

[nrc]

This is done now, but I should announce it properly.