Added barebones update command

rye/src/cli/mod.rs

@@ -9,6 +9,7 @@ mod lock;
 mod pin;
 mod remove;
 mod run;
+mod rye;
 mod shim;
 mod show;
 mod sync;
@@ -34,6 +35,8 @@ enum Command {
     Show(show::Args),
     Sync(sync::Args),
     Toolchain(toolchain::Args),
+    #[command(name = "self")]
+    Rye(rye::Args),
     Uninstall(uninstall::Args),
 }
 
@@ -55,6 +58,7 @@ pub fn execute() -> Result<(), Error> {
         Command::Show(cmd) => show::execute(cmd),
         Command::Sync(cmd) => sync::execute(cmd),
         Command::Toolchain(cmd) => toolchain::execute(cmd),
+        Command::Rye(cmd) => rye::execute(cmd),
         Command::Uninstall(cmd) => uninstall::execute(cmd),
     }
 }

rye/src/cli/rye.rs

@@ -0,0 +1,62 @@
+use std::process::Command;
+
+use anyhow::{bail, Context, Error};
+use clap::Parser;
+
+/// Rye self management
+#[derive(Parser, Debug)]
+pub struct Args {
+    #[command(subcommand)]
+    command: SubCommand,
+}
+
+/// Performs an update of rye.
+///
+/// This currently just is an alias to running cargo install again with the
+/// right arguments.
+#[derive(Parser, Debug)]
+pub struct UpdateCommand {
+    /// Update to a specific tag.
+    #[arg(long)]
+    tag: Option<String>,
+    /// Update to a specific git rev.
+    #[arg(long, conflicts_with = "tag")]
+    rev: Option<String>,
+    /// Force reinstallation
+    #[arg(long)]
+    force: bool,
+}
+
+#[derive(Parser, Debug)]
+enum SubCommand {
+    Update(UpdateCommand),
+}
+
+pub fn execute(cmd: Args) -> Result<(), Error> {
+    match cmd.command {
+        SubCommand::Update(args) => update(args),
+    }
+}
+
+fn update(args: UpdateCommand) -> Result<(), Error> {
+    let mut cmd = Command::new("cargo");
+    cmd.arg("install")
+        .arg("--git")
+        .arg("https://github.com/mitsuhiko/rye");
+    if let Some(ref rev) = args.rev {
+        cmd.arg("--rev");
+        cmd.arg(rev);
+    } else if let Some(ref tag) = args.tag {
+        cmd.arg("--tag");
+        cmd.arg(tag);
+    }
+    if args.force {
+        cmd.arg("--force");
+    }
+    cmd.arg("rye");
+    let status = cmd.status().context("unable to update via cargo-install")?;
+    if !status.success() {
+        bail!("failed to self-update via cargo-install");
+    }
+    Ok(())
+}