Install gyp python dependencies in prepare.py

.github/workflows/win.yml

@@ -82,9 +82,6 @@ jobs:
           submodules: recursive
           path: ${{ env.TBUILD }}\${{ env.REPO_NAME }}
 
-      - name: Python installs.
-        run: pip3 install --upgrade pywin32 six
-
       - name: Set up environment paths.
         shell: bash
         run: |

Telegram/build/prepare/prepare.py

@@ -418,6 +418,15 @@ win:
     SET PATH=%PATH_BACKUP_%
 """, 'ThirdParty')
 
+stage('python', """
+version: """ + (subprocess.run(['python', '-V'], capture_output=True, env=modifiedEnv).stdout.decode().strip().split()[-1] if win else '0') + """
+win:
+    python -m venv python
+    python\\Scripts\\activate.bat
+    pip install pywin32 six
+    deactivate
+""", 'ThirdParty')
+
 stage('NuGet', """
 win:
     mkdir NuGet
@@ -953,6 +962,8 @@ win:
     ) else (
         SET "FolderPostfix="
     )
+depends:python/Scripts/activate.bat
+    %THIRDPARTY_DIR%\\python\\Scripts\\activate.bat
     cd src\\client\\windows
     gyp --no-circular-check breakpad_client.gyp --format=ninja
     cd ..\\..
@@ -963,6 +974,8 @@ release:
     gyp dump_syms.gyp --format=ninja
     cd ..\\..\\..
     ninja -C out/Release%FolderPostfix% dump_syms
+win:
+    deactivate
 mac:
     git clone https://chromium.googlesource.com/linux-syscall-support src/third_party/lss
     cd src/third_party/lss

Telegram/configure.bat

@@ -3,6 +3,7 @@
 setlocal enabledelayedexpansion
 set "FullScriptPath=%~dp0"
 
+call %FullScriptPath%..\..\ThirdParty\python\Scripts\activate.bat
 python %FullScriptPath%configure.py %*
 if %errorlevel% neq 0 goto error
 

docs/building-win-x64.md

@@ -24,10 +24,6 @@ You will require **api_id** and **api_hash** to access the Telegram API servers.
 * Download **CMake 3.21 or later** installer from [https://cmake.org/download/](https://cmake.org/download/) and install to ***BuildPath*\\ThirdParty\\cmake**
 * Download **Git** installer from [https://git-scm.com/download/win](https://git-scm.com/download/win) and install it.
 
-Open **x64 Native Tools Command Prompt for VS 2022.bat**, go to ***BuildPath*** and run
-
-    python -m pip install pywin32 six
-
 ## Clone source code and prepare libraries
 
 Open **x64 Native Tools Command Prompt for VS 2022.bat**, go to ***BuildPath*** and run

docs/building-win.md

@@ -24,10 +24,6 @@ You will require **api_id** and **api_hash** to access the Telegram API servers.
 * Download **CMake 3.21 or later** installer from [https://cmake.org/download/](https://cmake.org/download/) and install to ***BuildPath*\\ThirdParty\\cmake**
 * Download **Git** installer from [https://git-scm.com/download/win](https://git-scm.com/download/win) and install it.
 
-Open **x86 Native Tools Command Prompt for VS 2022.bat**, go to ***BuildPath*** and run
-
-    python -m pip install pywin32 six
-
 ## Clone source code and prepare libraries
 
 Open **x86 Native Tools Command Prompt for VS 2022.bat**, go to ***BuildPath*** and run