Install improvements (#351)

Install improvements

cmd/upgrade.go

@@ -37,13 +37,15 @@ const (
 	methodSudoPrefix        = "sudo-"
 
 	packageTypeNone = ""
+	packageTypeAUR  = "aur"
 	packageTypeDEB  = "deb"
 	packageTypeRPM  = "rpm"
 )
 
 var (
 	packageTypeByID = map[string]string{
 		"amzn":     packageTypeRPM,
+		"arch":     packageTypeAUR,
 		"centos":   packageTypeRPM,
 		"fedora":   packageTypeRPM,
 		"opensuse": packageTypeRPM,
@@ -287,6 +289,17 @@ func (c *Config) upgradePackage(fs vfs.FS, mutator chezmoi.Mutator, rr *github.R
 			arch = archReplacement[arch]
 		}
 
+		// chezmoi does not build and distribute AUR packages, so instead rely
+		// on pacman and the communnity package.
+		if packageType == packageTypeAUR {
+			var args []string
+			if useSudo {
+				args = append(args, "sudo")
+			}
+			args = append(args, "pacman", "-S", c.upgrade.repo)
+			return c.run("", args[0], args[1:]...)
+		}
+
 		// Find the corresponding release asset.
 		var releaseAsset *github.ReleaseAsset
 		suffix := arch + "." + packageType

docs/INSTALL.md

@@ -1,38 +1,57 @@
 # chezmoi Install Guide
 
-* [macOS with Homebrew](#macos-with-homebrew)
-* [Linux with Snap](#linux-with-snap)
 * [One-line binary install](#one-line-binary-install)
-* [Pre-built packages and binaries](#pre-built-packages-and-binaries)
+* [One-line package install](#one-line-package-install)
+* [Pre-built Linux packages](#pre-built-linux-packages)
+* [Pre-built binaries](#pre-built-binaries)
 * [From source](#from-source)
 * [Upgrading](#upgrading)
 
-## macOS with Homebrew
+## One-line binary install
 
-    brew install twpayne/taps/chezmoi
+Install the correct binary for your operating system and architecture with a
+single command.
 
-## Linux with Snap
+    curl -sfL https://git.io/chezmoi | sh
 
-    snap install chezmoi --classic
+## One-line package install
 
-## One-line binary install
+Install chezmoi with a single command.
 
-    curl -sfL https://git.io/chezmoi | sh
+| OS    | Distribution | Method   | Command                             |
+| ----- | ------------ | ---------| ----------------------------------- |
+| Linux | -            | snap     | `snap install chezmoi --classic`    |
+| Linux | Arch         | pacman   | `pacman -Ss chezmoi`                |
+| macOS | -            | Homebrew | `brew install twpayne/taps/chezmoi` |
+
+## Pre-built Linux packages
+
+Download a package for your operating system and architecture and install it
+with your package manager.
 
-## Pre-built packages and binaries
+| OS         | Architectures                                 | Package                                                                   |
+| ---------- | --------------------------------------------- | ------------------------------------------------------------------------- |
+| Debian     | amd64, arm64, armel, i386, ppc64, ppc64le     | [`deb`](https://github.com/twpayne/chezmoi/releases/latest)               |
+| RedHat     | aarch64, armhfp, i686, ppc64, ppc64le, x86_64 | [`rpm`](https://github.com/twpayne/chezmoi/releases/latest)               |
+| OpenSUSE   | aarch64, armhfp, i686, ppc64, ppc64le, x86_64 | [`rpm`](https://github.com/twpayne/chezmoi/releases/latest)               |
+| Ubuntu     | amd64, arm64, armel, i386, ppc64, ppc64le     | [`deb`](https://github.com/twpayne/chezmoi/releases/latest)               |
 
-| OS         | Architectures                                 | Package                                                        |
+## Pre-built binaries
+
+Download a tarball for your operating system containing a pre-built binary and
+documentation.
+
+| OS         | Architectures                                 | Tarball                                                        |
 | ---------- | --------------------------------------------- | -------------------------------------------------------------- |
-| Arch Linux | i686, x86_64                                  | [`chezmoi`](https://www.archlinux.org/packages/community/x86_64/chezmoi/)            |
-| Debian     | amd64, arm64, armel, i386, ppc64, ppc64le     | [`deb`](https://github.com/twpayne/chezmoi/releases/latest)    |
-| RedHat     | aarch64, armhfp, i686, ppc64, ppc64le, x86_64 | [`rpm`](https://github.com/twpayne/chezmoi/releases/latest)    |
-| OpenSUSE   | aarch64, armhfp, i686, ppc64, ppc64le, x86_64 | [`rpm`](https://github.com/twpayne/chezmoi/releases/latest)    |
 | FreeBSD    | amd64, arm, i386                              | [`tar.gz`](https://github.com/twpayne/chezmoi/releases/latest) |
-| OpenBSD    | amd64, arm, i386                              | [`tar.gz`](https://github.com/twpayne/chezmoi/releases/latest) |
 | Linux      | amd64, arm, arm64, i386, ppc64, ppc64le       | [`tar.gz`](https://github.com/twpayne/chezmoi/releases/latest) |
+| macOS      | amd64                                         | [`tar.gz`](https://github.com/twpayne/chezmoi/releases/latest) |
+| OpenBSD    | amd64, arm, i386                              | [`tar.gz`](https://github.com/twpayne/chezmoi/releases/latest) |
 
 ## From source
 
+Download, build, and install chezmoi for your system:
+
     cd $(mktemp -d) && go get -u github.com/twpayne/chezmoi
 
 ## Upgrading