124 lines
3 KiB
Go
124 lines
3 KiB
Go
package main
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"net/http"
|
|
"os"
|
|
"path"
|
|
"strings"
|
|
"time"
|
|
)
|
|
|
|
var pythonReleasesBaseURL = "https://www.python.org/ftp/python"
|
|
|
|
type PackageMetadata struct {
|
|
ArchivePath string
|
|
InstallPath string
|
|
Version string
|
|
}
|
|
|
|
type VersionTag struct {
|
|
Major string
|
|
Minor string
|
|
Patch string
|
|
}
|
|
|
|
func InstallPython(args []string, flags Flags, currentState State) error {
|
|
verbose := flags.Verbose
|
|
version := args[1]
|
|
|
|
if err := ValidateVersion(version); err != nil {
|
|
return err
|
|
}
|
|
|
|
packageMetadata, dlerr := downloadSource(version, flags.NoCache)
|
|
|
|
if dlerr != nil {
|
|
return dlerr
|
|
}
|
|
_, err := buildFromSource(packageMetadata, verbose)
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// Fetches the Python tarball for version <version> from python.org.
|
|
func downloadSource(version string, skipCache bool) (PackageMetadata, error) {
|
|
archiveName := fmt.Sprintf("Python-%s.tgz", version)
|
|
archivePath := GetPathFromStateDirectory(path.Join("cache", archiveName))
|
|
sourceUrl := fmt.Sprintf("%s/%s/%s", pythonReleasesBaseURL, version, archiveName)
|
|
|
|
client := http.Client{}
|
|
|
|
dlPrint := StartFmtGroup(fmt.Sprintf("Downloading source for Python %s", version))
|
|
start := time.Now()
|
|
_, err := os.Stat(archivePath)
|
|
|
|
if errors.Is(err, os.ErrNotExist) || skipCache {
|
|
dlPrint(fmt.Sprintf("Fetching from %s", sourceUrl))
|
|
|
|
resp, err := client.Get(sourceUrl)
|
|
|
|
if err != nil {
|
|
return PackageMetadata{}, err
|
|
}
|
|
|
|
defer resp.Body.Close()
|
|
file, _ := os.Create(archivePath)
|
|
io.Copy(file, resp.Body)
|
|
|
|
defer file.Close()
|
|
} else {
|
|
dlPrint(fmt.Sprintf("Found in cache: %s", archivePath))
|
|
}
|
|
|
|
dlPrint(fmt.Sprintf("✅ Done (%s)", time.Since(start)))
|
|
return PackageMetadata{ArchivePath: archivePath, Version: version}, nil
|
|
}
|
|
|
|
func buildFromSource(pkgMeta PackageMetadata, verbose bool) (PackageMetadata, error) {
|
|
buildPrint := StartFmtGroup(fmt.Sprintf("Building from source"))
|
|
start := time.Now()
|
|
|
|
buildPrint(fmt.Sprintf("Unpacking source for %s", pkgMeta.ArchivePath))
|
|
|
|
_, untarErr := RunCommand([]string{"tar", "zxvf", pkgMeta.ArchivePath}, GetPathFromStateDirectory("cache"), !verbose)
|
|
|
|
if untarErr != nil {
|
|
return pkgMeta, untarErr
|
|
}
|
|
|
|
unzippedRoot := strings.TrimSuffix(pkgMeta.ArchivePath, path.Ext(pkgMeta.ArchivePath))
|
|
|
|
buildPrint("Configuring installer")
|
|
|
|
targetDirectory := GetPathFromStateDirectory(path.Join("runtimes", fmt.Sprintf("py-%s", pkgMeta.Version)))
|
|
|
|
_, configureErr := RunCommand([]string{"./configure", fmt.Sprintf("--prefix=%s", targetDirectory), "--enable-optimizations"}, unzippedRoot, !verbose)
|
|
|
|
if configureErr != nil {
|
|
return pkgMeta, configureErr
|
|
}
|
|
|
|
buildPrint("Building")
|
|
_, buildErr := RunCommand([]string{"make", "altinstall"}, unzippedRoot, !verbose)
|
|
|
|
if buildErr != nil {
|
|
return pkgMeta, buildErr
|
|
}
|
|
|
|
if cleanupErr := os.RemoveAll(unzippedRoot); cleanupErr != nil {
|
|
return pkgMeta, cleanupErr
|
|
}
|
|
|
|
pkgMeta.InstallPath = targetDirectory
|
|
|
|
buildPrint(fmt.Sprintf("Installed Python %s at %s", pkgMeta.Version, pkgMeta.InstallPath))
|
|
buildPrint(fmt.Sprintf("✅ Done (%s)", time.Since(start)))
|
|
return pkgMeta, nil
|
|
}
|