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feat(update): auto-restart after update to load new version

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Uses syscall.Exec on Unix to replace the current process with the
updated binary, running --version to confirm. On Windows, falls back
to a message asking to restart manually.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Snider 2026-02-01 12:09:32 +00:00
parent 03727e18bb
commit 0ef41ef642
1 changed files with 34 additions and 5 deletions
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39
pkg/updater/cmd.go
View file

@ -2,7 +2,9 @@ package updater
import (
"fmt"
"os"
"runtime"
"syscall"
"github.com/host-uk/core/pkg/cli"
"github.com/spf13/cobra"
@ -115,9 +117,8 @@ func runUpdate(cmd *cobra.Command, args []string) error {
}
cli.Print("%s Updated to %s\n", cli.SuccessStyle.Render(cli.Glyph(":check:")), release.TagName)
cli.Print("Restart the CLI to use the new version.\n")
return nil
return restartBinary()
}
// handleDevUpdate handles updates from the dev release (rolling prerelease)
@ -154,9 +155,8 @@ func handleDevUpdate(currentVersion string) error {
}
cli.Print("%s Updated to %s\n", cli.SuccessStyle.Render(cli.Glyph(":check:")), release.TagName)
cli.Print("Restart the CLI to use the new version.\n")
return nil
return restartBinary()
}
// handleDevTagUpdate fetches the dev release using the direct tag
@ -185,7 +185,36 @@ func handleDevTagUpdate(currentVersion string) error {
}
cli.Print("%s Updated to latest dev build\n", cli.SuccessStyle.Render(cli.Glyph(":check:")))
cli.Print("Restart the CLI to use the new version.\n")
return restartBinary()
}
// restartBinary re-executes the current binary to load the new version.
// On Unix systems, it uses syscall.Exec to replace the current process.
// On Windows, it prints a message to restart manually.
func restartBinary() error {
executable, err := os.Executable()
if err != nil {
cli.Print("Restart the CLI to use the new version.\n")
return nil
}
// On Windows, exec doesn't work the same way - just ask to restart
if runtime.GOOS == "windows" {
cli.Print("Restart the CLI to use the new version.\n")
return nil
}
cli.Print("\n%s Restarting...\n", cli.DimStyle.Render("→"))
// Re-exec with --version to confirm the update
err = syscall.Exec(executable, []string{executable, "--version"}, os.Environ())
if err != nil {
// If exec fails, just tell user to restart
cli.Print("Restart the CLI to use the new version.\n")
return nil
}
// This line is never reached if exec succeeds
return nil
}