89 lines
2.3 KiB
Go
89 lines
2.3 KiB
Go
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package main
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import (
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"bytes"
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"errors"
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"fmt"
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"io"
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"os"
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"os/exec"
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"regexp"
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)
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var (
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versionRe = regexp.MustCompile(`version = "[^"]+"`)
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sha256Re = regexp.MustCompile(`sha256 = (?:"[^"]+"|lib.fakeSha256)`)
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vendorSha256Re = regexp.MustCompile(`vendorSha256 = (?:"[^"]+"|lib.fakeSha256)`)
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gotRe = regexp.MustCompile(`got:\s+(.+)`)
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)
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func main() {
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if err := mainErr(); err != nil {
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fmt.Fprintln(os.Stderr, err)
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}
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}
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func mainErr() error {
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if len(os.Args) < 3 {
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return errors.New("hash <pkg> <version>")
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}
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pkg, version := os.Args[1], os.Args[2]
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pkgFile := fmt.Sprintf("pkgs/%s/default.nix", pkg)
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content, err := os.ReadFile(pkgFile)
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if err != nil {
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return err
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}
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// Set version and reset hashes
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content = versionRe.ReplaceAll(content, []byte(fmt.Sprintf(`version = "%s"`, version)))
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content = sha256Re.ReplaceAll(content, []byte("sha256 = lib.fakeSha256"))
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content = vendorSha256Re.ReplaceAll(content, []byte("vendorSha256 = lib.fakeSha256"))
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if err := os.WriteFile(pkgFile, content, os.ModePerm); err != nil {
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return err
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}
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// Get sha256
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out, _ := run(pkg)
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match := gotRe.FindSubmatch(out)
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if match == nil {
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return errors.New("could not find expected sha256")
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}
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sha256 := match[1]
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sha256Repl := fmt.Sprintf(`sha256 = "%s"`, sha256)
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fmt.Printf("\n\n-----\n%s\n-----\n\n", sha256Repl)
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content = sha256Re.ReplaceAll(content, []byte(sha256Repl))
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if err := os.WriteFile(pkgFile, content, os.ModePerm); err != nil {
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return err
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}
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// Get vendorSha256
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out, _ = run(pkg)
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match = gotRe.FindSubmatch(out)
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if match == nil {
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return errors.New("could not find expected vendorSha256")
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}
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vendorSha256 := match[1]
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vendorSha256Repl := fmt.Sprintf(`vendorSha256 = "%s"`, vendorSha256)
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fmt.Printf("\n\n-----\n%s\n-----\n\n", vendorSha256Repl)
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content = vendorSha256Re.ReplaceAll(content, []byte(vendorSha256Repl))
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if err := os.WriteFile(pkgFile, content, os.ModePerm); err != nil {
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return err
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}
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// Make sure it builds
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_, err = run(pkg)
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return err
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}
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func run(pkg string) ([]byte, error) {
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var buf bytes.Buffer
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w := io.MultiWriter(&buf, os.Stdout)
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cmd := exec.Command("nix-build", "-E", fmt.Sprintf("with import <nixpkgs> { }; callPackage ./pkgs/%s { }", pkg))
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cmd.Stdout = w
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cmd.Stderr = w
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err := cmd.Run()
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return buf.Bytes(), err
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}
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