dotnet-installer/build_projects/dotnet-cli-build/PkgTargets.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Runtime.InteropServices;
using Microsoft.DotNet.Cli.Build.Framework;
using Microsoft.DotNet.InternalAbstractions;

using static Microsoft.DotNet.Cli.Build.Framework.BuildHelpers;

namespace Microsoft.DotNet.Cli.Build
{
    public class PkgTargets
    {
        public static string PkgsIntermediateDir { get; set; }
        public static string SharedHostComponentId { get; set; }
        public static string SharedFxComponentId { get; set; }
        public static string SharedFxPkgId { get; set; }
        public static string SharedFrameworkNugetVersion { get; set; }
        public static string CLISdkComponentId { get; set; }
        public static string CLISdkPkgId { get; set; }
        public static string CLISdkNugetVersion { get; set; }
        public static string HostFxrComponentId { get; set; }

        public static BuildTargetResult InitPkg(BuildTargetContext c)
        {
            if (CurrentPlatform.IsPlatform(BuildPlatform.OSX))
            {
                PkgsIntermediateDir = Path.Combine(Dirs.Packages, "intermediate");
                Directory.CreateDirectory(PkgsIntermediateDir);

                SharedHostComponentId = $"com.microsoft.dotnet.sharedhost.component.osx.x64";
                HostFxrComponentId = $"com.microsoft.dotnet.hostfxr.component.osx.x64";

                string sharedFrameworkNugetName = Monikers.SharedFrameworkName;
                SharedFrameworkNugetVersion = CliDependencyVersions.SharedFrameworkVersion;
                SharedFxComponentId = $"com.microsoft.dotnet.sharedframework.{sharedFrameworkNugetName}.{SharedFrameworkNugetVersion}.component.osx.x64";
                SharedFxPkgId = $"com.microsoft.dotnet.{sharedFrameworkNugetName}.{SharedFrameworkNugetVersion}.osx.x64";

                CLISdkNugetVersion = c.BuildContext.Get<BuildVersion>("BuildVersion").NuGetVersion;
                CLISdkComponentId = $"com.microsoft.dotnet.dev.{CLISdkNugetVersion}.component.osx.x64";
                CLISdkPkgId = $"com.microsoft.dotnet.dev.{CLISdkNugetVersion}.osx.x64";
            }

            return c.Success();
        }

        public static BuildTargetResult GeneratePkgs(BuildTargetContext c)
        {
            if (CurrentPlatform.IsPlatform(BuildPlatform.OSX))
            {
                InitPkg(c);
                GenerateCLISdkProductArchive(c);
            }

            return c.Success();
        }

        public static BuildTargetResult GenerateCLISdkProductArchive(BuildTargetContext c)
        {
            if (CurrentPlatform.IsPlatform(BuildPlatform.OSX))
            {
                GenerateCLISdkPkg(c);

                string resourcePath = Path.Combine(Dirs.RepoRoot, "packaging", "osx", "clisdk", "resources");
                string outFilePath = Path.Combine(Dirs.Packages, c.BuildContext.Get<string>("CombinedFrameworkSDKHostInstallerFile"));

                // Copy SharedFX and host installers in the correct place
                var sharedFrameworkPkgIntermediatePath = Path.Combine(PkgsIntermediateDir, $"{SharedFxComponentId}.pkg");
                var sharedHostPkgIntermediatePath = Path.Combine(PkgsIntermediateDir, $"{SharedHostComponentId}.pkg");
                var hostFxrPkgIntermediatePath = Path.Combine(PkgsIntermediateDir, $"{HostFxrComponentId}.pkg");


                File.Copy(c.BuildContext.Get<string>("SharedFrameworkInstallerFile"), sharedFrameworkPkgIntermediatePath, true);
                File.Copy(c.BuildContext.Get<string>("SharedHostInstallerFile"), sharedHostPkgIntermediatePath, true);
                File.Copy(c.BuildContext.Get<string>("HostFxrInstallerFile"), hostFxrPkgIntermediatePath, true);

                string inputDistTemplatePath = Path.Combine(
                    Dirs.RepoRoot,
                    "packaging",
                    "osx",
                    "clisdk",
                    "Distribution-Template");
                string distTemplate = File.ReadAllText(inputDistTemplatePath);
                string distributionPath = Path.Combine(PkgsIntermediateDir, "CLI-SDK-Formatted-Distribution-Template.xml");
                string formattedDistContents =
                    distTemplate.Replace("{SharedFxComponentId}", SharedFxComponentId)
                    .Replace("{SharedHostComponentId}", SharedHostComponentId)
                    .Replace("{HostFxrComponentId}", HostFxrComponentId)
                    .Replace("{CLISdkComponentId}", CLISdkComponentId)
                    .Replace("{CLISdkNugetVersion}", CLISdkNugetVersion)
                    .Replace("{CLISdkBrandName}", Monikers.CLISdkBrandName)
                    .Replace("{SharedFxBrandName}", Monikers.SharedFxBrandName)
                    .Replace("{SharedHostBrandName}", Monikers.SharedHostBrandName)
                    .Replace("{HostFxrBrandName}", Monikers.HostFxrBrandName);
                File.WriteAllText(distributionPath, formattedDistContents);

                Cmd("productbuild",
                    "--version", CLISdkNugetVersion,
                    "--identifier", CLISdkPkgId,
                    "--package-path", PkgsIntermediateDir,
                    "--resources", resourcePath,
                    "--distribution", distributionPath,
                    outFilePath)
                .Execute()
                .EnsureSuccessful();
            }

            return c.Success();
        }

        public static BuildTargetResult GenerateCLISdkPkg(BuildTargetContext c)
        {
            if (CurrentPlatform.IsPlatform(BuildPlatform.OSX))
            {
                string outFilePath = Path.Combine(PkgsIntermediateDir, CLISdkComponentId + ".pkg");
                string installLocation = "/usr/local/share/dotnet";
                string scriptsLocation = Path.Combine(Dirs.RepoRoot, "packaging", "osx", "clisdk", "scripts");

                Cmd("pkgbuild",
                    "--root", c.BuildContext.Get<string>("CLISDKRoot"),
                    "--identifier", CLISdkComponentId,
                    "--version", CLISdkNugetVersion,
                    "--install-location", installLocation,
                    "--scripts", scriptsLocation,
                    outFilePath)
                    .Execute()
                    .EnsureSuccessful();
            }

            return c.Success();
        }
    }
}