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install.go
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install.go
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package main
import (
"fmt"
kingpin "gopkg.in/alecthomas/kingpin.v2"
"github.com/andrewkroh/gvm"
)
func installCommand(cmd *kingpin.CmdClause) func(*gvm.Manager) error {
var version string
var build bool
cmd.Flag("build", "Build go version from source").Short('b').BoolVar(&build)
cmd.Arg("version", "Go version to install (e.g. 1.21.0).").StringVar(&version)
return func(manager *gvm.Manager) error {
if version == "" {
return fmt.Errorf("no version specified")
}
ver, err := gvm.ParseVersion(version)
if err != nil {
return err
}
has, err := manager.HasVersion(ver)
if err != nil {
return err
}
if has {
fmt.Printf("Version %v already installed\n", version)
return nil
}
var dir string
if build {
fmt.Printf("Building go-%v. Please wait...\n", version)
dir, err = manager.Build(ver)
} else {
fmt.Printf("Installing go-%v. Please wait...\n", version)
dir, err = manager.Install(ver)
}
if err != nil {
fmt.Println("Installation failed with:\n", err)
return err
}
fmt.Printf("Successfully installed go-%v to %v\n", version, dir)
return nil
}
}