Merge pull request #284 from cargo-bins/split-docs

split docs, first step towards simplifying support instructions
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# Cargo B(inary)Install
`cargo binstall` provides a low-complexity mechanism for installing rust binaries as an alternative to building from source (via `cargo install`) or manually downloading packages. This is intended to work with existing CI artifacts and infrastructure, and with minimal overhead for package maintainers.
To support `binstall` maintainers must add configuration values to `Cargo.toml` to allow the tool to locate the appropriate binary package for a given version and target. See [Supporting Binary Installation](#Supporting-Binary-Installation) for instructions on how to support `binstall` in your projects.
## Installing
`binstall` works by fetching the crate information from `crates.io`, then searching the linked `repository` for matching releases and artifacts, with fallbacks to [quickinstall](https://github.com/alsuren/cargo-quickinstall) and finally `cargo install` if these are not found.
To support `binstall` maintainers must add configuration values to `Cargo.toml` to allow the tool to locate the appropriate binary package for a given version and target. See [SUPPORT.md](./SUPPORT.md) for more detail.
To get started _using_ `cargo-binstall`, first install the binary (either via `cargo install cargo-binstall` or by downloading a pre-compiled [release](https://github.com/ryankurte/cargo-binstall/releases).
linux x86\_64:
```
wget https://github.com/ryankurte/cargo-binstall/releases/latest/download/cargo-binstall-x86_64-unknown-linux-musl.tgz
```
## Status
linux armv7:
```
wget https://github.com/ryankurte/cargo-binstall/releases/latest/download/cargo-binstall-armv7-unknown-linux-musleabihf.tgz
```
![Build](https://github.com/ryankurte/cargo-binstall/workflows/Rust/badge.svg)
[![GitHub tag](https://img.shields.io/github/tag/ryankurte/cargo-binstall.svg)](https://github.com/ryankurte/cargo-binstall)
[![Crates.io](https://img.shields.io/crates/v/cargo-binstall.svg)](https://crates.io/crates/cargo-binstall)
[![Docs.rs](https://docs.rs/cargo-binstall/badge.svg)](https://docs.rs/cargo-binstall)
linux arm64:
```
wget https://github.com/ryankurte/cargo-binstall/releases/latest/download/cargo-binstall-aarch64-unknown-linux-musl.tgz
```
## Installation
macos x86\_64:
```
wget https://github.com/ryankurte/cargo-binstall/releases/latest/download/cargo-binstall-x86_64-apple-darwin.zip
```
To get started _using_ `cargo-binstall` first install the binary (either via `cargo install cargo-binstall` or by downloading a pre-compiled [release](https://github.com/ryankurte/cargo-binstall/releases)).
| OS | Arch | URL |
| ------- | ------- | ------------------------------------------------------------ |
| linux | x86\_64 | https://github.com/cargo-bins/cargo-binstall/releases/latest/download/cargo-binstall-x86_64-unknown-linux-musl.tgz |
| linux | armv7 | https://github.com/cargo-bins/cargo-binstall/releases/latest/download/cargo-binstall-x86_64-unknown-linux-musl.tgz |
| linux | arm64 | https://github.com/cargo-bins/cargo-binstall/releases/latest/download/cargo-binstall-aarch64-unknown-linux-musl.tgz |
| macos | x86\_64 | https://github.com/cargo-bins/cargo-binstall/releases/latest/download/cargo-binstall-x86_64-apple-darwin.zip |
| macos | m1 | https://github.com/cargo-bins/cargo-binstall/releases/latest/download/cargo-binstall-aarch64-apple-darwin.zip |
| windows | x86\_64 | https://github.com/cargo-bins/cargo-binstall/releases/latest/download/cargo-binstall-x86_64-pc-windows-msvc.zip |
macos M1:
```
wget https://github.com/ryankurte/cargo-binstall/releases/latest/download/cargo-binstall-aarch64-apple-darwin.zip
```
windows x86\_64:
```
wget https://github.com/ryankurte/cargo-binstall/releases/latest/download/cargo-binstall-x86_64-pc-windows-msvc.zip
```
## Usage
Supported packages can be installed using `cargo binstall NAME` where `NAME` is the crate.io package name.
Supported packages can be installed using `cargo binstall NAME` where `NAME` is the crates.io package name.
Package versions and targets may be specified using the `--version` and `--target` arguments respectively, and install directory with `--install-dir` (this defaults to `$HOME/.cargo/bin`, with fall-backs to `$HOME/.bin` if unavailable). For additional options please see `cargo binstall --help`.
Package versions and targets may be specified using the `--version` and `--target` arguments respectively, and will be installed into `$HOME/.cargo/bin` by default. For additional options please see `cargo binstall --help`.
```
[garry] ➜ ~ cargo binstall radio-sx128x --version 0.14.1-alpha.5
@ -68,125 +60,6 @@ $ binstall \
--pkg-fmt="txz" crate_name
```
## Status
![Build](https://github.com/ryankurte/cargo-binstall/workflows/Rust/badge.svg)
[![GitHub tag](https://img.shields.io/github/tag/ryankurte/cargo-binstall.svg)](https://github.com/ryankurte/cargo-binstall)
[![Crates.io](https://img.shields.io/crates/v/cargo-binstall.svg)](https://crates.io/crates/cargo-binstall)
[![Docs.rs](https://docs.rs/cargo-binstall/badge.svg)](https://docs.rs/cargo-binstall)
### Features
- Manifest discovery
- [x] Fetch crate / manifest via crates.io
- [ ] Fetch crate / manifest via git (/ github / gitlab)
- [x] Use local crate / manifest (`--manifest-path`)
- [x] Fetch build from the [quickinstall](https://github.com/alsuren/cargo-quickinstall) repository
- Package formats
- [x] Tgz
- [x] Txz
- [x] Tbz2
- [x] Tar.zst
- [x] Tar
- [x] Zip
- [x] Bin
- Extraction / Transformation
- [x] Extract from subdirectory in archive (ie. support archives with platform or target subdirectories)
- [x] Extract specific files from archive (ie. support single archive with multiple platform binaries)
- Security
- [ ] Package signing
- [ ] Package verification
- [x] Fallback to installing from source
## Supporting Binary Installation
`binstall` works with existing CI-built binary outputs, with configuration via `[package.metadata.binstall]` keys in the relevant crate manifest.
When configuring `binstall` you can test against a local manifest with `--manifest-path=PATH` argument to use the crate and manifest at the provided `PATH`, skipping crate discovery and download.
To get started, add a `[package.metadata.binstall]` section to your `Cargo.toml`. As an example, the default configuration would be:
```toml
[package.metadata.binstall]
pkg-url = "{ repo }/releases/download/v{ version }/{ name }-{ target }-v{ version }.{ archive-format }"
bin-dir = "{ name }-{ target }-v{ version }/{ bin }{ binary-ext }"
pkg-fmt = "tgz"
```
With the following configuration keys:
- `pkg-url` specifies the package download URL for a given target/version, templated
- `bin-dir` specifies the binary path within the package, templated (with an `.exe` suffix on windows)
- `pkg-fmt` overrides the package format for download/extraction (defaults to: `tgz`)
`pkg-url` and `bin-dir` are templated to support different names for different versions / architectures / etc.
Template variables use the format `{ VAR }` where `VAR` is the name of the variable, with the following variables available:
- `name` is the name of the crate / package
- `version` is the crate version (per `--version` and the crate manifest)
- `repo` is the repository linked in `Cargo.toml`
- `bin` is the name of a specific binary, inferred from the crate configuration
- `target` is the rust target name (defaults to your architecture, but can be overridden using the `--target` command line option if required()
- `archive-format` is the filename extension of the package archive format
- `binary-ext` is the string `.exe` if the `target` is for Windows, or the empty string otherwise
- `format` is a soft-deprecated alias for `archive-format` in `pkg-url`, and for `binary-ext` in `bin-dir`; in the future this may warn at install time.
`pkg-url`, `pkg-fmt` and `bin-dir` can be overridden on a per-target basis if required, for example, if your `x86_64-pc-windows-msvc` builds use `zip` archives this could be set via:
```
[package.metadata.binstall.overrides.x86_64-pc-windows-msvc]
pkg-fmt = "zip"
```
### Defaults
By default `binstall` is setup to work with github releases, and expects to find:
- an archive named `{ name }-{ target }-v{ version }.{ archive-format }`
- so that this does not overwrite different targets or versions when manually downloaded
- located at `{ repo }/releases/download/v{ version }/`
- compatible with github tags / releases
- containing a folder named `{ name }-{ target }-v{ version }`
- so that prior binary files are not overwritten when manually executing `tar -xvf ...`
- containing binary files in the form `{ bin }{ binary-ext }` (where `bin` is the cargo binary name and `binary-ext` is `.exe` on windows and empty on other platforms)
If your package already uses this approach, you shouldn't need to set anything.
### QuickInstall
[QuickInstall](https://github.com/alsuren/cargo-quickinstall) is an unofficial repository of prebuilt binaries for Crates, and `binstall` has built-in support for it! If your crate is built by QuickInstall, it will already work with `binstall`. However, binaries as configured above take precedence when they exist.
### Examples
For example, the default configuration (as shown above) for a crate called `radio-sx128x` (version: `v0.14.1-alpha.5` on x86\_64 linux) would be interpolated to:
- A download URL of `https://github.com/rust-iot/rust-radio-sx128x/releases/download/v0.14.1-alpha.5/rust-radio-sx128x-x86_64-unknown-linux-gnu-v0.14.1-alpha.5.tgz`
- Containing a single binary file `rust-radio-sx128x-x86_64-unknown-linux-gnu-v0.14.1-alpha.5/rust-radio-x86_64-unknown-linux-gnu`
- Installed to`$HOME/.cargo/bin/rust-radio-sx128x-v0.14.1-alpha.5`
- With a symlink from `$HOME/.cargo/bin/rust-radio-sx128x`
#### If the package name does not match the crate name
As is common with libraries / utilities (and the `radio-sx128x` example), this can be overridden by specifying the `pkg-url`:
```toml
[package.metadata.binstall]
pkg-url = "{ repo }/releases/download/v{ version }/sx128x-util-{ target }-v{ version }.{ archive-format }"
```
Which provides a download URL of: `https://github.com/rust-iot/rust-radio-sx128x/releases/download/v0.14.1-alpha.5/sx128x-util-x86_64-unknown-linux-gnu-v0.14.1-alpha.5.tgz`
#### If the package structure differs from the default
Were the package to contain binaries in the form `name-target[.exe]`, this could be overridden using the `bin-dir` key:
```toml
[package.metadata.binstall]
bin-dir = "{ bin }-{ target }{ binary-ext }"
```
Which provides a binary path of: `sx128x-util-x86_64-unknown-linux-gnu[.exe]`. It is worth noting that binary names are inferred from the crate, so long as cargo builds them this _should_ just work.
## FAQ
@ -197,9 +70,9 @@ Which provides a binary path of: `sx128x-util-x86_64-unknown-linux-gnu[.exe]`. I
- Crates already have these, and they already contain a significant portion of the required information.
Also there's this great and woefully underused (imo) `[package.metadata]` field.
- Is this secure?
- Yes and also no? We're not (yet? #1) doing anything to verify the CI binaries are produced by the right person / organisation.
- Yes and also no? We're not (yet? [#1](https://github.com/cargo-bins/cargo-binstall/issues/1)) doing anything to verify the CI binaries are produced by the right person / organisation.
However, we're pulling data from crates.io and the cargo manifest, both of which are _already_ trusted entities, and this is
functionally a replacement for `curl ... | bash` or `wget`-ing the same files, so, things can be improved but it's also sorta moot
functionally a replacement for `curl ... | bash` or `wget`-ing the same files, so, things can be improved but it's also fairly moot
- What do the error codes mean?
- You can find a full description of errors including exit codes here: <https://docs.rs/cargo-binstall/latest/cargo_binstall/errors/enum.BinstallError.html>

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# Support for `cargo binstall`
`binstall` works with existing CI-built binary outputs, with configuration via `[package.metadata.binstall]` keys in the relevant crate manifest.
When configuring `binstall` you can test against a local manifest with `--manifest-path=PATH` argument to use the crate and manifest at the provided `PATH`, skipping crate discovery and download.
To get started, add a `[package.metadata.binstall]` section to your `Cargo.toml`. As an example, the default configuration would be:
```toml
[package.metadata.binstall]
pkg-url = "{ repo }/releases/download/v{ version }/{ name }-{ target }-v{ version }.{ archive-format }"
bin-dir = "{ name }-{ target }-v{ version }/{ bin }{ binary-ext }"
pkg-fmt = "tgz"
```
With the following configuration keys:
- `pkg-url` specifies the package download URL for a given target/version, templated
- `bin-dir` specifies the binary path within the package, templated (with an `.exe` suffix on windows)
- `pkg-fmt` overrides the package format for download/extraction (defaults to: `tgz`)
`pkg-url` and `bin-dir` are templated to support different names for different versions / architectures / etc.
Template variables use the format `{ VAR }` where `VAR` is the name of the variable, with the following variables available:
- `name` is the name of the crate / package
- `version` is the crate version (per `--version` and the crate manifest)
- `repo` is the repository linked in `Cargo.toml`
- `bin` is the name of a specific binary, inferred from the crate configuration
- `target` is the rust target name (defaults to your architecture, but can be overridden using the `--target` command line option if required()
- `archive-format` is the filename extension of the package archive format
- `binary-ext` is the string `.exe` if the `target` is for Windows, or the empty string otherwise
- `format` is a soft-deprecated alias for `archive-format` in `pkg-url`, and for `binary-ext` in `bin-dir`; in the future this may warn at install time.
`pkg-url`, `pkg-fmt` and `bin-dir` can be overridden on a per-target basis if required, for example, if your `x86_64-pc-windows-msvc` builds use `zip` archives this could be set via:
```
[package.metadata.binstall.overrides.x86_64-pc-windows-msvc]
pkg-fmt = "zip"
```
### Defaults
By default `binstall` is setup to work with github releases, and expects to find:
- an archive named `{ name }-{ target }-v{ version }.{ archive-format }`
- so that this does not overwrite different targets or versions when manually downloaded
- located at `{ repo }/releases/download/v{ version }/`
- compatible with github tags / releases
- containing a folder named `{ name }-{ target }-v{ version }`
- so that prior binary files are not overwritten when manually executing `tar -xvf ...`
- containing binary files in the form `{ bin }{ binary-ext }` (where `bin` is the cargo binary name and `binary-ext` is `.exe` on windows and empty on other platforms)
If your package already uses this approach, you shouldn't need to set anything.
### QuickInstall
[QuickInstall](https://github.com/alsuren/cargo-quickinstall) is an unofficial repository of prebuilt binaries for Crates, and `binstall` has built-in support for it! If your crate is built by QuickInstall, it will already work with `binstall`. However, binaries as configured above take precedence when they exist.
### Examples
For example, the default configuration (as shown above) for a crate called `radio-sx128x` (version: `v0.14.1-alpha.5` on x86\_64 linux) would be interpolated to:
- A download URL of `https://github.com/rust-iot/rust-radio-sx128x/releases/download/v0.14.1-alpha.5/rust-radio-sx128x-x86_64-unknown-linux-gnu-v0.14.1-alpha.5.tgz`
- Containing a single binary file `rust-radio-sx128x-x86_64-unknown-linux-gnu-v0.14.1-alpha.5/rust-radio-x86_64-unknown-linux-gnu`
- Installed to`$HOME/.cargo/bin/rust-radio-sx128x-v0.14.1-alpha.5`
- With a symlink from `$HOME/.cargo/bin/rust-radio-sx128x`
#### If the package name does not match the crate name
As is common with libraries / utilities (and the `radio-sx128x` example), this can be overridden by specifying the `pkg-url`:
```toml
[package.metadata.binstall]
pkg-url = "{ repo }/releases/download/v{ version }/sx128x-util-{ target }-v{ version }.{ archive-format }"
```
Which provides a download URL of: `https://github.com/rust-iot/rust-radio-sx128x/releases/download/v0.14.1-alpha.5/sx128x-util-x86_64-unknown-linux-gnu-v0.14.1-alpha.5.tgz`
#### If the package structure differs from the default
Were the package to contain binaries in the form `name-target[.exe]`, this could be overridden using the `bin-dir` key:
```toml
[package.metadata.binstall]
bin-dir = "{ bin }-{ target }{ binary-ext }"
```
Which provides a binary path of: `sx128x-util-x86_64-unknown-linux-gnu[.exe]`. It is worth noting that binary names are inferred from the crate, so long as cargo builds them this _should_ just work.