Bump version to 0.15.4 and improve disk space handling during installation

CHANGELOG.md

@@ -7,6 +7,19 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.15.4] - 2026-10-07
+
+### Fixed
+
+- `devkit.bat` now recognizes Visual Studio Installer exit code
+  `0x80070070` (-2147024784 / 2147942512) as ERROR_DISK_FULL (the
+  installer's `SizePreCheckEvaluator` failed) and stops with a clear
+  "not enough free disk space" message, instead of retrying Build Tools,
+  which failed the same way. 0.15.3 had misread this code as a
+  product conflict.
+- `devkit.bat` checks that the system drive has about 7 GB free before
+  installing the C++ Build Tools.
+
 ## [0.15.3] - 2026-10-07
 
 ### Fixed
@@ -431,6 +444,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial project scaffold from auto-gen-py-project
 
+[0.15.4]: https://github.com/axcel-blade/DevKit/releases/tag/v0.15.4
 [0.15.3]: https://github.com/axcel-blade/DevKit/releases/tag/v0.15.3
 [0.15.2]: https://github.com/axcel-blade/DevKit/releases/tag/v0.15.2
 [0.15.1]: https://github.com/axcel-blade/DevKit/releases/tag/v0.15.1

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "devkit"
-version = "0.15.3"
+version = "0.15.4"
 edition = "2021"
 description = "DevKit application — install developer SDKs and configure environment variables"
 license = "MIT"

README.md

@@ -31,7 +31,7 @@ Checking for available versions ...
 
 DevKit
 OS: Windows
-Version: 0.15.3
+Version: 0.15.4
 #    ID               NAME                     STATUS         INSTALLED        AVAILABLE
 --------------------------------------------------------------------------------------------------------
 1    anaconda         Anaconda                 not_installed  -                2026.07-1

devkit.bat

@@ -161,12 +161,20 @@ if not errorlevel 1 exit /b 0
 echo The Microsoft C++ linker ^(link.exe^) was not found.
 echo Rust's msvc toolchain needs Visual Studio Build Tools with the C++ workload.
 echo Installing Visual Studio Build Tools ^(several minutes, asks for admin rights^)...
+REM The C++ tools plus Windows SDK need roughly 7 GB on the system drive
+REM (packages are cached there even when VS lives elsewhere). Warn early.
+call :check_disk_space
+if errorlevel 1 exit /b 1
 set "VS_ARGS=--quiet --wait --norestart --nocache --add Microsoft.VisualStudio.Workload.VCTools --includeRecommended"
 
 REM An existing Visual Studio (Community, Professional, Build Tools, ...)
 REM that only lacks the C++ tools: modify it through its own installer
 REM instead of installing a second product next to it, which the VS
-REM installer rejects (e.g. exit code 0x80070070 / 2147942512).
+REM installer rejects.
+REM
+REM Exit code 0x80070070 (-2147024784 / 2147942512) is ERROR_DISK_FULL: the
+REM installer's SizePreCheckEvaluator found too little free space. Retrying
+REM with Build Tools would fail the same way, so stop with a clear message.
 set "VS_SETUP=%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\setup.exe"
 set "VS_EXISTING="
 if exist "%VSWHERE%" (
@@ -177,6 +185,8 @@ if defined VS_EXISTING if exist "%VS_SETUP%" (
     REM Start-Process -Verb RunAs raises the UAC prompt; -Wait blocks until done.
     powershell -NoProfile -NonInteractive -Command ^
         "$q = [char]34; $a = 'modify --installPath ' + $q + $env:VS_EXISTING + $q + ' --add Microsoft.VisualStudio.Component.VC.Tools.x86.x64 --add Microsoft.VisualStudio.Component.Windows11SDK.22621 --includeRecommended --passive --norestart'; $p = Start-Process -FilePath $env:VS_SETUP -Verb RunAs -Wait -PassThru -ArgumentList $a; exit $p.ExitCode"
+    set "VS_RC=!ERRORLEVEL!"
+    if "!VS_RC!"=="-2147024784" goto :msvc_disk_full
     call :has_msvc
     if not errorlevel 1 (
         echo Visual Studio C++ tools installed.
@@ -189,7 +199,10 @@ set "WINGET_OK="
 where winget >nul 2>&1
 if not errorlevel 1 (
     winget install --id Microsoft.VisualStudio.2022.BuildTools -e --source winget --accept-package-agreements --accept-source-agreements --override "!VS_ARGS!"
-    if not errorlevel 1 set "WINGET_OK=1"
+    set "VS_RC=!ERRORLEVEL!"
+    if "!VS_RC!"=="0" set "WINGET_OK=1"
+    REM winget surfaces the installer's disk-full code (0x80070070).
+    if "!VS_RC!"=="-2147024784" goto :msvc_disk_full
 )
 REM No winget, or winget failed: fall back to Microsoft's Build Tools bootstrapper.
 call :has_msvc
@@ -216,6 +229,26 @@ echo Install "Build Tools for Visual Studio" from https://visualstudio.microsoft
 echo with the "Desktop development with C++" workload, then run DevKit again.
 exit /b 1
 
+REM Installer reported ERROR_DISK_FULL (0x80070070).
+:msvc_disk_full
+echo.
+echo Error: not enough free disk space to install the C++ Build Tools ^(0x80070070^).
+echo The Visual Studio installer needs about 7 GB free on %SystemDrive%.
+echo Free up space ^(e.g. Disk Cleanup, empty the Recycle Bin, clear %TEMP%^), then run DevKit again.
+exit /b 1
+
+REM Fails when the system drive has less than ~7 GB free, since the VS
+REM installer caches packages there and its pre-check rejects low space.
+:check_disk_space
+set "FREE_GB="
+for /f "usebackq delims=" %%F in (`powershell -NoProfile -NonInteractive -Command "[math]::Floor((Get-PSDrive -Name $env:SystemDrive.TrimEnd(':')).Free / 1GB)"`) do set "FREE_GB=%%F"
+if not defined FREE_GB exit /b 0
+if !FREE_GB! LSS 7 (
+    echo Only !FREE_GB! GB free on %SystemDrive%; the C++ Build Tools need about 7 GB.
+    goto :msvc_disk_full
+)
+exit /b 0
+
 :cargo_build
 "%CARGO_EXE%" build --release --quiet --manifest-path "%ROOT%Cargo.toml" > "%BUILD_LOG%" 2>&1
 exit /b %ERRORLEVEL%

docs/architecture.md

@@ -1,6 +1,6 @@
 # Architecture
 
-DevKit **0.15.3** is a CLI application with a plugin pipeline.
+DevKit **0.15.4** is a CLI application with a plugin pipeline.
 
 ```text
 target/release/devkit (binary) / devkit.bat / devkit.sh
@@ -66,7 +66,7 @@ Checking for available versions ...
 
 DevKit
 OS: Windows
-Version: 0.15.3
+Version: 0.15.4
 #    ID               NAME                     STATUS         INSTALLED        AVAILABLE
 --------------------------------------------------------------------------------------------------------
 1    anaconda         Anaconda                 not_installed  -                2026.07-1

docs/getting-started.md

@@ -16,7 +16,8 @@
   the msvc Rust toolchain needs. `devkit.bat` installs them when missing
   (asks for admin rights): it first adds the C++ tools to an existing Visual
   Studio install, otherwise installs Build Tools via winget, falling back to
-  the `vs_BuildTools.exe` bootstrapper.
+  the `vs_BuildTools.exe` bootstrapper. It needs about 7 GB free on the
+  system drive; installer exit code `0x80070070` means the disk is full.
 - On Linux / WSL / macOS, a system C linker (`cc`). `devkit.sh` and the
   Makefile install the distro toolchain (`build-essential`, `base-devel`, ...)
   when it is missing.
@@ -71,7 +72,7 @@ Checking for available versions ...
 
 DevKit
 OS: Windows
-Version: 0.15.3
+Version: 0.15.4
 #    ID               NAME                     STATUS         INSTALLED        AVAILABLE
 --------------------------------------------------------------------------------------------------------
 1    anaconda         Anaconda                 not_installed  -                2026.07-1

docs/index.md

@@ -1,6 +1,6 @@
 # Documentation
 
-DevKit **0.15.3** documentation index.
+DevKit **0.15.4** documentation index.
 
 | Page | Description |
 |------|-------------|

docs/plugins.md

@@ -1,6 +1,6 @@
 # Plugins
 
-DevKit **0.15.3** ships these built-in plugins. The OS column is where the menu lists the plugin and where `devkit install` accepts it.
+DevKit **0.15.4** ships these built-in plugins. The OS column is where the menu lists the plugin and where `devkit install` accepts it.
 
 | ID | OS | Notes |
 |----|----|-------|
@@ -107,7 +107,7 @@ Checking for available versions ...
 
 DevKit
 OS: Windows
-Version: 0.15.3
+Version: 0.15.4
 #    ID               NAME                     STATUS         INSTALLED        AVAILABLE
 --------------------------------------------------------------------------------------------------------
 1    anaconda         Anaconda                 not_installed  -                2026.07-1