isle/go/cmd/entrypoint/version.go

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package main
import (
"fmt"
"os"
"path/filepath"
)
var subCmdVersion = subCmd{
name: "version",
descr: "Dumps version and build info to stdout",
do: func(subCmdCtx subCmdCtx) error {
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versionPath := filepath.Join(envAppDirPath, "share/version")
version, err := os.ReadFile(versionPath)
if err != nil {
return fmt.Errorf("reading version info from %q: %w", versionPath, err)
}
if _, err := os.Stdout.Write(version); err != nil {
return fmt.Errorf("writing version info to stdout: %w", err)
}
return nil
},
}