packaging: install and run Inno files in a build directory

Upcoming commits will refactor the Windows installers so their
content is dynamically derived. In preparation for this, we
copy the Inno files into a new build directory and run them
from there. This required changing some relative paths to
work from a new directory level but is otherwise a pretty
straightforward change.

Differential Revision: https://phab.mercurial-scm.org/D7157

contrib/packaging/hgpackaging/inno.py

@@ -1,85 +1,93
 # inno.py - Inno Setup functionality.
 #
 # Copyright 2019 Gregory Szorc <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 # no-check-code because Python 3 native.
 
 import os
 import pathlib
 import shutil
 import subprocess
 
 from .py2exe import build_py2exe
 from .util import find_vc_runtime_files
 
-
 EXTRA_PACKAGES = {
     'dulwich',
     'keyring',
     'pygments',
     'win32ctypes',
 }
 
 
 def build(
     source_dir: pathlib.Path,
     build_dir: pathlib.Path,
     python_exe: pathlib.Path,
     iscc_exe: pathlib.Path,
     version=None,
 ):
     """Build the Inno installer.
 
     Build files will be placed in ``build_dir``.
 
     py2exe's setup.py doesn't use setuptools. It doesn't have modern logic
     for finding the Python 2.7 toolchain. So, we require the environment
     to already be configured with an active toolchain.
     """
     if not iscc_exe.exists():
         raise Exception('%s does not exist' % iscc_exe)
 
     vc_x64 = r'\x64' in os.environ.get('LIB', '')
+    arch = 'x64' if vc_x64 else 'x86'
+    inno_source_dir = source_dir / 'contrib' / 'packaging' / 'inno'
+    inno_build_dir = build_dir / ('inno-%s' % arch)
 
     requirements_txt = (
         source_dir / 'contrib' / 'packaging' / 'inno' / 'requirements.txt'
     )
 
+    inno_build_dir.mkdir(parents=True, exist_ok=True)
+
     build_py2exe(
         source_dir,
         build_dir,
         python_exe,
         'inno',
         requirements_txt,
         extra_packages=EXTRA_PACKAGES,
     )
 
     # hg.exe depends on VC9 runtime DLLs. Copy those into place.
     for f in find_vc_runtime_files(vc_x64):
         if f.name.endswith('.manifest'):
             basename = 'Microsoft.VC90.CRT.manifest'
         else:
             basename = f.name
 
         dest_path = source_dir / 'dist' / basename
 
         print('copying %s to %s' % (f, dest_path))
         shutil.copyfile(f, dest_path)
 
     print('creating installer')
 
+    # Copy Inno files into place.
+    for p in ('mercurial.iss', 'modpath.iss'):
+        shutil.copyfile(inno_source_dir / p, inno_build_dir / p)
+
     args = [str(iscc_exe)]
 
     if vc_x64:
         args.append('/dARCH=x64')
 
     if version:
         args.append('/dVERSION=%s' % version)
 
     args.append('/Odist')
-    args.append('contrib/packaging/inno/mercurial.iss')
+    args.append(str(inno_build_dir / 'mercurial.iss'))
 
     subprocess.run(args, cwd=str(source_dir), check=True)

contrib/packaging/inno/mercurial.iss

@@ -1,124 +1,124
 ; Script generated by the Inno Setup Script Wizard.
 ; SEE THE DOCUMENTATION FOR DETAILS ON CREATING INNO SETUP SCRIPT FILES!
 
 #ifndef VERSION
 #define FileHandle
 #define FileLine
 #define VERSION = "unknown"
-#if FileHandle = FileOpen(SourcePath + "\..\..\..\mercurial\__version__.py")
+#if FileHandle = FileOpen(SourcePath + "\..\..\mercurial\__version__.py")
   #expr FileLine = FileRead(FileHandle)
   #expr FileLine = FileRead(FileHandle)
   #define VERSION = Copy(FileLine, Pos('"', FileLine)+1, Len(FileLine)-Pos('"', FileLine)-1)
 #endif
 #if FileHandle
   #expr FileClose(FileHandle)
 #endif
 #pragma message "Detected Version: " + VERSION
 #endif
 
 #ifndef ARCH
 #define ARCH = "x86"
 #endif
 
 [Setup]
 AppCopyright=Copyright 2005-2019 Matt Mackall and others
 AppName=Mercurial
 AppVersion={#VERSION}
 #if ARCH == "x64"
 AppVerName=Mercurial {#VERSION} (64-bit)
 OutputBaseFilename=Mercurial-{#VERSION}-x64
 ArchitecturesAllowed=x64
 ArchitecturesInstallIn64BitMode=x64
 #else
 AppVerName=Mercurial {#VERSION}
 OutputBaseFilename=Mercurial-{#VERSION}
 #endif
 InfoAfterFile=contrib/win32/postinstall.txt
 LicenseFile=COPYING
 ShowLanguageDialog=yes
 AppPublisher=Matt Mackall and others
 AppPublisherURL=https://mercurial-scm.org/
 AppSupportURL=https://mercurial-scm.org/
 AppUpdatesURL=https://mercurial-scm.org/
 AppID={{4B95A5F1-EF59-4B08-BED8-C891C46121B3}
 AppContact=[e-mail]
 DefaultDirName={pf}\Mercurial
-SourceDir=..\..\..
+SourceDir=..\..
 VersionInfoDescription=Mercurial distributed SCM (version {#VERSION})
 VersionInfoCopyright=Copyright 2005-2019 Matt Mackall and others
 VersionInfoCompany=Matt Mackall and others
 InternalCompressLevel=max
 SolidCompression=true
 SetupIconFile=contrib\win32\mercurial.ico
 AllowNoIcons=true
 DefaultGroupName=Mercurial
 PrivilegesRequired=none
 ChangesEnvironment=true
 
 [Files]
 Source: contrib\mercurial.el; DestDir: {app}/Contrib
 Source: contrib\vim\*.*; DestDir: {app}/Contrib/Vim
 Source: contrib\zsh_completion; DestDir: {app}/Contrib
 Source: contrib\bash_completion; DestDir: {app}/Contrib
 Source: contrib\tcsh_completion; DestDir: {app}/Contrib
 Source: contrib\tcsh_completion_build.sh; DestDir: {app}/Contrib
 Source: contrib\hgk; DestDir: {app}/Contrib; DestName: hgk.tcl
 Source: contrib\xml.rnc; DestDir: {app}/Contrib
 Source: contrib\mercurial.el; DestDir: {app}/Contrib
 Source: contrib\mq.el; DestDir: {app}/Contrib
 Source: contrib\hgweb.fcgi; DestDir: {app}/Contrib
 Source: contrib\hgweb.wsgi; DestDir: {app}/Contrib
 Source: contrib\win32\ReadMe.html; DestDir: {app}; Flags: isreadme
 Source: contrib\win32\postinstall.txt; DestDir: {app}; DestName: ReleaseNotes.txt
 Source: dist\hg.exe; DestDir: {app}; AfterInstall: Touch('{app}\hg.exe.local')
 Source: dist\lib\*.dll; Destdir: {app}\lib
 Source: dist\lib\*.pyd; Destdir: {app}\lib
 Source: dist\python*.dll; Destdir: {app}; Flags: skipifsourcedoesntexist
 Source: dist\msvc*.dll; DestDir: {app}; Flags: skipifsourcedoesntexist
 Source: dist\Microsoft.VC*.CRT.manifest; DestDir: {app}; Flags: skipifsourcedoesntexist
 Source: dist\lib\library.zip; DestDir: {app}\lib
 Source: doc\*.html; DestDir: {app}\Docs
 Source: doc\style.css; DestDir: {app}\Docs
 Source: mercurial\help\*.txt; DestDir: {app}\help
 Source: mercurial\help\internals\*.txt; DestDir: {app}\help\internals
 Source: mercurial\default.d\*.rc; DestDir: {app}\default.d
 Source: mercurial\locale\*.*; DestDir: {app}\locale; Flags: recursesubdirs createallsubdirs skipifsourcedoesntexist
 Source: mercurial\templates\*.*; DestDir: {app}\Templates; Flags: recursesubdirs createallsubdirs
 Source: CONTRIBUTORS; DestDir: {app}; DestName: Contributors.txt
 Source: COPYING; DestDir: {app}; DestName: Copying.txt
 
 [INI]
 Filename: {app}\Mercurial.url; Section: InternetShortcut; Key: URL; String: https://mercurial-scm.org/
 Filename: {app}\default.d\editor.rc; Section: ui; Key: editor; String: notepad
 
 [UninstallDelete]
 Type: files; Name: {app}\Mercurial.url
 Type: filesandordirs; Name: {app}\default.d
 Type: files; Name: "{app}\hg.exe.local"
 
 [Icons]
 Name: {group}\Uninstall Mercurial; Filename: {uninstallexe}
 Name: {group}\Mercurial Command Reference; Filename: {app}\Docs\hg.1.html
 Name: {group}\Mercurial Configuration Files; Filename: {app}\Docs\hgrc.5.html
 Name: {group}\Mercurial Ignore Files; Filename: {app}\Docs\hgignore.5.html
 Name: {group}\Mercurial Web Site; Filename: {app}\Mercurial.url
 
 [Tasks]
 Name: modifypath; Description: Add the installation path to the search path; Flags: unchecked
 
 [Code]
 procedure Touch(fn: String);
 begin
   SaveStringToFile(ExpandConstant(fn), '', False);
 end;
 
 const
     ModPathName = 'modifypath';
     ModPathType = 'user';
 
 function ModPathDir(): TArrayOfString;
 begin
     setArrayLength(Result, 1)
     Result[0] := ExpandConstant('{app}');
 end;
 #include "modpath.iss"