94 lines
1.6 KiB
Go
94 lines
1.6 KiB
Go
package main
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import (
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"fmt"
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"io/ioutil"
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"log"
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"os"
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"os/exec"
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"strings"
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"github.com/digitalocean/go-libvirt"
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)
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var template = `
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{pkgs, ...}:
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{
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imports = [
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<nixpkgs/nixos/modules/virtualisation/qemu-vm.nix>
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<nix/base.nix>
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];
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services.xserver.displayManager.sessionCommands =
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"while [ 1 ]; do ${pkgs.%s}/bin/%s; done &";
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}
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`
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func isPackageExists(name string) bool {
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cmd := exec.Command("nix-env", "-iA", name)
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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err := cmd.Run()
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return err == nil
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}
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func nixPath(name string) (path string, err error) {
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command := exec.Command("nix", "path-info", name)
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bytes, err := command.Output()
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if err != nil {
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return
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}
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path = string(bytes)
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return
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}
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func generate(l *libvirt.Libvirt, name, bin string) {
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if !isPackageExists(name) {
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log.Println("Package pkgs."+name, "does not exists")
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return
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}
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path, err := nixPath(name)
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if err != nil {
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log.Println("Cannot find nix path")
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return
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}
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path = strings.TrimSpace(path)
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files, err := ioutil.ReadDir(path + "/bin/")
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if err != nil {
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log.Println(err)
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return
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}
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if bin == "" && len(files) != 1 {
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fmt.Println("There's more than one binary in */bin, " +
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"you should specify one of them explicitly")
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fmt.Println("Files in", path+"/bin/:")
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for _, f := range files {
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fmt.Println("\t", f.Name())
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}
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return
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}
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if bin != "" {
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var found bool = false
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for _, f := range files {
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if bin == f.Name() {
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found = true
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}
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}
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if !found {
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log.Println("There's no such file in */bin")
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return
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}
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} else {
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bin = files[0].Name()
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}
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realName := strings.Split(name, ".")[1]
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fmt.Printf(template, realName, bin)
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}
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