Merge pull request #379 from njmueller/compat/windows7-x64

Add opt-in Windows 7 SP1 x64 compatibility build

.github/workflows/windows7.yml

@@ -0,0 +1,43 @@
+# Experimental, unsupported Windows 7 SP1 x64 portable build (docs/windows7.md). It runs by hand and
+# weekly, so ordinary PRs never wait on it, and the weekly run shows when a dependency update starts
+# importing a post-Windows-7 API. packaging/windows/windows7.ps1 does the work: it is the only build
+# that uses the patched vendor/windows-link. A modern Windows runner proves compilation and host
+# smoke tests only: run the checklist in docs/windows7.md on actual Windows 7 before claiming support.
+name: Windows 7 x64 compatibility
+
+on:
+  schedule:
+    - cron: "23 5 * * 1" # weekly
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+env:
+  CARGO_TERM_COLOR: always
+  CARGO_INCREMENTAL: 0
+
+jobs:
+  build:
+    runs-on: windows-2022
+    timeout-minutes: 90
+    steps:
+      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
+      - uses: ilammy/msvc-dev-cmd@0b201ec74fa43914dc39ae48a89fd1d8cb592756 # v1.13.0
+        with:
+          arch: x64
+      - uses: dtolnay/rust-toolchain@7e38f4b43b4db5c8dd498af069a4f6196df1d067 # master
+        with:
+          toolchain: nightly-2026-10-01
+          components: rust-src
+      - uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
+        with:
+          key: windows7-x64
+      - name: Build, check and test the portable package
+        shell: pwsh
+        run: ./packaging/windows/windows7.ps1 -Test
+      - uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
+        with:
+          name: vectorcraft-windows7-x64-portable
+          path: dist/release/vectorcraft-windows7-x64-portable.zip
+          if-no-files-found: error

Cargo.lock

@@ -952,6 +952,7 @@ dependencies = [
  "egui-wgpu",
  "egui-winit",
  "egui_glow",
+ "glow",
  "glutin",
  "glutin-winit",
  "image",

NOTICE

@@ -30,6 +30,11 @@ based in part on the work of the Independent JPEG Group.
 WebAssembly plug-ins run in the wasmi interpreter (MIT OR Apache-2.0); its wasmparser dependency is
 under the Apache License 2.0 with the LLVM exception.
 
+The experimental Windows 7 build (packaging/windows/windows7.ps1) compiles a modified copy of the
+windows-link crate 0.2.1 (vendor/windows-link; Microsoft, MIT OR Apache-2.0) that binds CoTaskMemFree
+through ole32.dll. Its license texts are in vendor/windows-link and ship in that build's ZIP; every
+other build uses the unmodified crate from crates.io.
+
 Builds made with craft-fonts (the CRAFT_FONTS_DIR build option; all official releases) embed the
 fonts listed in https://github.com/storytold/craft-fonts/blob/main/ATTRIBUTION.md (BIZ UDPGothic,
 Shippori Mincho, BIZ UDMincho, Noto Sans CJK SC and Noto Sans Arabic in the current manifest;

README.md

@@ -176,6 +176,8 @@ claude mcp add vectorcraft -- /path/to/vectorcraft-cli mcp
 
 The details are in [`docs/mcp.md`](docs/mcp.md) and [`docs/control-protocol.md`](docs/control-protocol.md).
 
+For the experimental, unsupported 64-bit Windows 7 build, see [Windows 7 instructions](docs/windows7.md).
+
 ## Status
 
 VectorCraft is under active development. [**ROADMAP.md**](ROADMAP.md) covers what ships today, the

ROADMAP.md

@@ -42,7 +42,7 @@ since 2026-10-01.
 | **Bundled content:** brush, symbol, style and swatch libraries | ~30% | Ours are original and generated in code, and far fewer than Illustrator ships; brush and symbol libraries are still missing |
 | **Performance** | unverified | Multithreaded, off-thread rendering and caches are in place. The last budget run (2026-10-01, loaded machine) measured 290 ms for a 50k-path fit against a 16 ms budget. Re-run `vectorcraft-cli perf` on an idle machine |
 | **Robustness** | good, new | ~2,840 tests, property tests, no panics in shipped code (lints, the `guard` safety net, import fuzzing), Data Recovery. Missing: a corpus of real-world files, Windows/Linux/browser QA |
-| **Platforms and 1.0 polish** | ~60% | The macOS app and the web build work, and Finder opens every readable format with the macOS app (#295, #354); hybrid-graphics laptops render on the power-saving GPU by default (#306); web drops land in the document they were dropped on (#359); Windows/Linux packaging and accessibility are pending |
+| **Platforms and 1.0 polish** | ~60% | The macOS app and the web build work, and Finder opens every readable format with the macOS app (#295, #354); hybrid-graphics laptops render on the power-saving GPU by default (#306); web drops land in the document they were dropped on (#359); Windows/Linux packaging and accessibility are pending; an experimental, unsupported Windows 7 x64 OpenGL build exists (community-contributed, not verified by maintainers) |
 | **Agent automation** | beyond Illustrator | Every command, gesture and dialog is drivable over MCP, the CLI and the control channel |
 
 ### Where we're lacking (in priority order)
@@ -169,7 +169,7 @@ grade by behaviour against `plan/illustrator/`, not by whether a menu item exist
 | M11 | Artboards & views (artboard panel/tool, Trim View, middle-button pan, print tiling and the status bar's artboard navigator done; multiple windows, presentation polish) | 🟡 | 15–25 |
 | M12 | Advanced color & art (CMYK/ICC, separations, Gradient Mesh, Live Paint, Image Trace, Graphs) | 🟡 Gradient Mesh, Live Paint, Image Trace (12 presets, 18 ms/1k² image), Recolor Artwork, colour management (ICC, soft proofing, separations preview), Graphs (all 9 tools, Graph Data/Type, regenerate in place) done; graph Design/Column/Marker designs pending | 6–10 |
 | M13 | Automation (Actions ✅ record/playback, persisted; variables, scripting, batch) | 🟡 | 18–27 |
-| M14 | 1.0 polish (preferences, shortcut editor, workspaces, accessibility, packaging for all OSes) | 🟡 Preferences, shortcut editor (chords with Shift and a punctuation key fire as typed), workspaces, a custom title bar on Windows/Linux with a Home button, content-sized dialogs and menus that scroll when longer than the window done; accessibility, Windows/Linux packaging pending | 18–28 |
+| M14 | 1.0 polish (preferences, shortcut editor, workspaces, accessibility, packaging for all OSes) | 🟡 Preferences, shortcut editor (chords with Shift and a punctuation key fire as typed), workspaces, a custom title bar on Windows/Linux with a Home button, content-sized dialogs and menus that scroll when longer than the window done; an experimental, unsupported Windows 7 x64 portable OpenGL build (not verified by maintainers); accessibility and broader Windows/Linux packaging/QA pending | 18–28 |
 | — | Interaction fidelity pass (every tool's modifiers, Properties panel per context, isolation, nuance) | ⬜ | 60–90 |
 | — | Hardening at scale (big-file corpus, fuzzing, cross-platform + browser QA) | 🟡 | 50–80 |
 | | **Total to full parity** (one agent; re-derived from the [Parity estimate](#parity-estimate) table) | | **~320–500** |

apps/vectorcraft/Cargo.toml

@@ -9,10 +9,17 @@ default-run = "vectorcraft"
 [lints]
 workspace = true
 
+[features]
+default = ["wgpu", "accessibility"]
+wgpu = ["eframe/wgpu"]
+accessibility = ["eframe/accesskit"]
+# Build with --no-default-features --features windows7 and the win7 Rust target.
+windows7 = ["eframe/glow"]
+
 [dependencies]
 vectorcraft-engine = { workspace = true }
 vectorcraft-ui-egui = { workspace = true }
-eframe = { workspace = true, features = ["default_fonts", "wgpu", "accesskit", "wayland", "x11"] }
+eframe = { workspace = true, features = ["default_fonts", "wayland", "x11"] }
 egui = { workspace = true }
 serde_json = { workspace = true }
 log = { workspace = true }

apps/vectorcraft/src/main.rs

@@ -7,6 +7,13 @@
 //! See `vectorcraft_ui_egui::control` for the methods.
 #![cfg_attr(all(target_os = "windows", not(debug_assertions)), windows_subsystem = "windows")]
 
+#[cfg(all(feature = "windows7", any(feature = "wgpu", feature = "accessibility")))]
+compile_error!("windows7 requires --no-default-features (wgpu and accessibility must be disabled)");
+#[cfg(all(windows, feature = "windows7", not(target_vendor = "win7")))]
+compile_error!("windows7 requires --target x86_64-win7-windows-msvc; the ordinary Windows target still imports newer APIs");
+#[cfg(all(target_vendor = "win7", not(feature = "windows7")))]
+compile_error!("the win7 target requires --no-default-features --features windows7");
+
 mod clipboard;
 mod control_server;
 #[cfg(target_os = "macos")]
@@ -50,9 +57,14 @@ impl eframe::App for App {
             discard_marked_text();
         }
     }
+    #[cfg(not(feature = "windows7"))]
     fn on_exit(&mut self) {
         save_prefs(&self.0);
     }
+    #[cfg(feature = "windows7")]
+    fn on_exit(&mut self, _gl: Option<&eframe::glow::Context>) {
+        save_prefs(&self.0);
+    }
 }
 
 /// Open files handed to the app (command line, macOS Finder and Dock) as documents. A file that
@@ -262,6 +274,7 @@ fn app_icon() -> egui::IconData {
 /// integrated GPU of a hybrid-graphics laptop does easily, while presenting frames rendered on the
 /// discrete GPU through the integrated one made the window flicker on some laptops. With a single
 /// GPU both preferences pick it.
+#[cfg(feature = "wgpu")]
 fn power_preference(pref: Option<&str>, env: Option<eframe::wgpu::PowerPreference>) -> eframe::wgpu::PowerPreference {
     use eframe::wgpu::PowerPreference;
     match (env, pref) {
@@ -272,6 +285,7 @@ fn power_preference(pref: Option<&str>, env: Option<eframe::wgpu::PowerPreferenc
 }
 
 /// "name (backend, kind)" of the adapter the window renders with, for Help › About and bug reports.
+#[cfg(feature = "wgpu")]
 fn adapter_summary(info: &eframe::wgpu::AdapterInfo) -> String {
     format!("{} ({:?}, {:?})", info.name.trim(), info.backend, info.device_type)
 }
@@ -297,9 +311,11 @@ fn main() -> eframe::Result {
     }
     let saved = read_prefs();
     let saved_window = saved.as_ref().and_then(|ui| ui.window);
+    #[cfg(feature = "wgpu")]
     let gpu_pref = saved.as_ref().and_then(|ui| ui.engine_prefs.get("gpuPreference")).and_then(serde_json::Value::as_str);
+    #[cfg(feature = "wgpu")]
     let power = power_preference(gpu_pref, eframe::wgpu::PowerPreference::from_env());
-    let mut options = eframe::NativeOptions {
+    let options = eframe::NativeOptions {
         viewport: egui::ViewportBuilder::default()
             .with_title("VectorCraft")
             .with_inner_size(window::DEFAULT_SIZE)
@@ -311,11 +327,18 @@ fn main() -> eframe::Result {
             .with_title_shown(false)
             .with_icon(app_icon())
             .with_app_id("ai.storyteller.vectorcraft"),
+        #[cfg(feature = "windows7")]
+        renderer: eframe::Renderer::Glow,
         ..Default::default()
     };
-    if let eframe::egui_wgpu::WgpuSetup::CreateNew(create) = &mut options.wgpu_options.wgpu_setup {
-        create.power_preference = power;
-    }
+    #[cfg(feature = "wgpu")]
+    let options = {
+        let mut options = options;
+        if let eframe::egui_wgpu::WgpuSetup::CreateNew(create) = &mut options.wgpu_options.wgpu_setup {
+            create.power_preference = power;
+        }
+        options
+    };
     // Files opened from Finder and the Dock arrive as events, not arguments.
     #[cfg(target_os = "macos")]
     open_documents::install();
@@ -340,11 +363,16 @@ fn main() -> eframe::Result {
                 let recovery = prefs_path().and_then(|p| Some(p.parent()?.join("Data Recovery").to_string_lossy().to_string()));
                 app.session.recovery.set_default_folder(recovery);
             }
+            #[cfg(feature = "wgpu")]
             if let Some(rs) = &cc.wgpu_render_state {
                 let summary = adapter_summary(&rs.adapter.get_info());
                 log::info!("vectorcraft: rendering with {summary} (power preference {power:?})");
                 app.graphics_adapter = Some(summary);
             }
+            #[cfg(feature = "windows7")]
+            {
+                app.graphics_adapter = Some("OpenGL (Windows 7 compatibility)".into());
+            }
             app.integrated_titlebar = cfg!(target_os = "macos");
             app.custom_titlebar = CUSTOM_TITLEBAR;
             if let Some(port) = control_port {
@@ -363,7 +391,7 @@ fn main() -> eframe::Result {
     )
 }
 
-#[cfg(test)]
+#[cfg(all(test, feature = "wgpu"))]
 mod tests {
     use super::*;
     use eframe::wgpu::PowerPreference;

apps/vectorcraft/src/printing.rs

@@ -156,6 +156,9 @@ mod system {
     }
 
     pub fn printers() -> Vec<Printer> {
+        #[cfg(feature = "windows7")]
+        let script = "Get-WmiObject Win32_Printer | ForEach-Object { \"$($_.Default)`t$($_.Name)\" }";
+        #[cfg(not(feature = "windows7"))]
         let script = "Get-CimInstance Win32_Printer | ForEach-Object { \"$($_.Default)`t$($_.Name)\" }";
         output(&mut powershell(script)).map(|t| windows_printers(&t)).unwrap_or_default()
     }
@@ -174,7 +177,19 @@ mod system {
     }
 
     pub fn setup(_printer: Option<&str>) -> Result<(), String> {
-        Command::new("explorer").arg("ms-settings:printers").spawn().map(|_| ()).map_err(|e| e.to_string())
+        #[cfg(feature = "windows7")]
+        let mut command = {
+            let mut command = Command::new("control.exe");
+            command.arg("printers");
+            command
+        };
+        #[cfg(not(feature = "windows7"))]
+        let mut command = {
+            let mut command = Command::new("explorer");
+            command.arg("ms-settings:printers");
+            command
+        };
+        command.spawn().map(|_| ()).map_err(|e| e.to_string())
     }
 }
 

docs/windows7.md

@@ -0,0 +1,82 @@
+# Windows 7 x64 compatibility build (experimental, unsupported)
+
+Windows 7 is not a supported platform. This build is experimental and community-maintained,
+and the VectorCraft maintainers have not verified it on Windows 7.
+
+This separate build targets **64-bit Windows 7 SP1**. It uses OpenGL instead of wgpu,
+and omits the native AccessKit accessibility adapter. Printer discovery supports the
+PowerShell version included with Windows 7, and printer setup opens Control Panel.
+The normal desktop and web builds retain their existing defaults. A vendor graphics driver providing **OpenGL 3.3 or newer**
+is required; the Windows built-in generic display driver is insufficient. GPU selection
+in Preferences and `WGPU_POWER_PREF` do not control this OpenGL build.
+
+## Build or download
+
+In your GitHub fork, open **Actions → Windows 7 x64 compatibility → Run workflow** (it
+also runs weekly, never on pull requests).
+When it succeeds, download the `vectorcraft-windows7-x64-portable` artifact, extract the
+contained portable ZIP, then run `vectorcraft.exe` on Windows 7. The CLI is included.
+No MSI is provided: the existing installer remains for modern Windows.
+
+To build locally, use a **Windows 10/11 build computer**, with Rust/rustup and Visual Studio
+2022 C++ build tools (x64 compiler and Windows SDK). Open an **x64 Native Tools Command
+Prompt for VS 2022**, change to your clone's repository root (the directory containing
+`Cargo.toml`), and run:
+
+```powershell
+powershell -ExecutionPolicy Bypass -File packaging/windows/windows7.ps1
+```
+
+Add `-Test` to also run the app and CLI tests on the build computer.
+
+Output: `dist/release/vectorcraft-windows7-x64-portable.zip`. The script installs the pinned
+nightly compiler and `rust-src`, rebuilds the standard library for
+`x86_64-win7-windows-msvc`, and links the C runtime statically. It never installs Rust on
+the Windows 7 machine. The optional `CRAFT_FONTS_DIR` setting works as in the normal build.
+Without it, install fonts for the languages you need on the destination machine.
+
+The Windows 7 target matters: modern Rust's ordinary `x86_64-pc-windows-msvc` target
+requires Windows 10, including standard-library and random-number APIs. Selecting OpenGL
+alone or changing an installer version check cannot fix that.
+
+References: [Rust's Windows 7 target](https://doc.rust-lang.org/rustc/platform-support/win7-windows-msvc.html)
+and [Windows baseline change](https://blog.rust-lang.org/2024/02/26/Windows-7/).
+
+The packaging script checks x64 PE headers, the subsystem version, and known incompatible
+imports (including `GetSystemTimePreciseAsFileTime`) before creating the ZIP. This is a
+regression check, not an exhaustive audit of every Windows API.
+
+The small vendored `windows-link` patch routes `CoTaskMemFree` to its documented
+`ole32.dll` export on the Windows 7 target; the newer binding otherwise imports
+`combase.dll`, which is absent on Windows 7. Only this script uses it: it passes
+`--config "patch.crates-io.windows-link.path='vendor/windows-link'"` to Cargo, so every other
+build, including the normal Windows one, keeps the checksum-verified crates.io crate. Cargo
+records the patch in `Cargo.lock`, so the script resolves once, fails if anything other than
+windows-link's source changed, builds with `--locked`, and then restores `Cargo.lock`.
+
+## Runtime validation
+
+The contributor reports that a user ran the portable x64 compatibility build on Windows 7 SP1
+with an NVIDIA graphics card. Their original build failed at startup with
+`GetSystemTimePreciseAsFileTime` missing from `kernel32.dll`; the compatibility
+build resolved that failure. The tested build was based on upstream commit
+`1f7873273b67007b0aefc63313e0d34a39f45453`. The exact GPU/driver version and completion
+of every checklist item below were not recorded, and the maintainers have not reproduced it,
+so the build remains experimental and unsupported.
+
+## Runtime acceptance checklist
+
+A successful build on the Windows 2022 CI runner does **not** prove Windows 7 runtime
+compatibility. Before declaring support, test on a Windows 7 SP1 x64 machine and record
+its GPU, driver version, Windows updates and any missing-DLL/entry-point error:
+
+- Start `vectorcraft.exe`; verify a visible canvas, resizing, minimize/restore and exit.
+- Draw a shape, save a `.vectorcraft` document, close and reopen it.
+- Open `examples/dusk-poster.vectorcraft`; export PNG and PDF and inspect both.
+- Exercise native Open/Save dialogs, clipboard text/images and drag-and-drop.
+- Change a preference, exit and verify it survives restarting.
+- Run `vectorcraft-cli.exe --version` and a headless export from a Command Prompt in the
+  extracted application folder.
+
+This build is experimental until that checklist passes. New dependency versions can add
+newer Windows imports, so retain Cargo.lock and repeat runtime QA after dependency updates.

packaging/windows/windows7.ps1

@@ -0,0 +1,91 @@
+<# Experimental, unsupported Windows 7 SP1 x64 build (docs/windows7.md).
+   Build on Windows 10/11 with the VS 2022 x64 C++ tools and Windows SDK.
+   From the repository root: powershell -File packaging/windows/windows7.ps1 [-Test]
+   The resulting portable ZIP targets Windows 7 SP1 x64 with an OpenGL 3.3 driver.
+   The compiler runs on the build host, not on Windows 7. -Test also runs the app and CLI tests
+   on the build host. #>
+param([string] $Toolchain = 'nightly-2026-10-01', [switch] $Test)
+$ErrorActionPreference = 'Stop'
+$Root = (Resolve-Path (Join-Path $PSScriptRoot '..\..')).Path
+$Target = 'x86_64-win7-windows-msvc'
+function Invoke-Checked([scriptblock] $Command) {
+  & $Command
+  if ($LASTEXITCODE -ne 0) { throw "Command failed with exit code $LASTEXITCODE" }
+}
+# Cargo.lock without windows-link's registry source and checksum lines (and with LF line endings),
+# so the lock files with and without the patch below compare equal.
+function Get-LockWithoutWindowsLinkSource([string] $Text) {
+  ($Text -replace "`r`n", "`n") -replace '(?m)^(name = "windows-link"\nversion = "[^"]*"\n)source = "[^"]*"\nchecksum = "[^"]*"\n', '$1'
+}
+Push-Location $Root
+$FlagName = 'CARGO_TARGET_X86_64_WIN7_WINDOWS_MSVC_RUSTFLAGS'
+$OldFlags = [Environment]::GetEnvironmentVariable($FlagName)
+$OldWinres = $env:VECTORCRAFT_REQUIRE_WINRES
+$Lock = Join-Path $Root 'Cargo.lock'
+$LockBytes = [IO.File]::ReadAllBytes($Lock)
+try {
+  Invoke-Checked { rustup toolchain install $Toolchain --profile minimal --component rust-src }
+  # windows-sys imports CoTaskMemFree from combase.dll, which Windows 7 lacks. Only this build uses
+  # the patched copy in vendor/windows-link (see its VECTORCRAFT-PATCH.md); every other build keeps
+  # the crates.io crate. Cargo records the patch in Cargo.lock, so resolve once, check that nothing
+  # but windows-link's source moved, then build --locked. The finally block restores Cargo.lock.
+  $Patch = @('--config', "patch.crates-io.windows-link.path='vendor/windows-link'")
+  Invoke-Checked { cargo "+$Toolchain" metadata --format-version 1 @Patch | Out-Null }
+  $Before = Get-LockWithoutWindowsLinkSource ([Text.Encoding]::UTF8.GetString($LockBytes))
+  $After = Get-LockWithoutWindowsLinkSource ([IO.File]::ReadAllText($Lock))
+  if ($Before -cne $After) { throw 'Cargo.lock is out of date: applying the windows-link patch changed other entries' }
+  $CargoArgs = @('--locked') + $Patch + @('--target', $Target, '--no-default-features', '--features', 'vectorcraft/windows7')
+  $Tree = cargo "+$Toolchain" tree @CargoArgs -p vectorcraft -e normal --prefix none
+  if ($LASTEXITCODE -ne 0) { throw 'dependency inspection failed' }
+  if ($Tree -match '^(wgpu|wgpu-core|wgpu-hal|accesskit_windows) v') { throw 'unsupported Windows backend in compatibility build' }
+  if (-not ($Tree -match '^windows-link v[^ ]+ \(.*vendor[\\/]windows-link\)')) { throw 'the patched windows-link is not in use' }
+  # The ordinary pc-windows-msvc standard library requires Windows 10. Rebuild std for win7.
+  [Environment]::SetEnvironmentVariable($FlagName, '-C target-feature=+crt-static')
+  $env:VECTORCRAFT_REQUIRE_WINRES = '1'
+  $CargoArgs += @('-p', 'vectorcraft', '-p', 'vectorcraft-cli')
+  Invoke-Checked { cargo "+$Toolchain" build -Z build-std=std,panic_unwind @CargoArgs --release }
+  $TargetDir = if ($env:CARGO_TARGET_DIR) { $env:CARGO_TARGET_DIR } else { 'target' }
+  $Bin = Join-Path $TargetDir "$Target\release"
+  foreach ($Name in 'vectorcraft.exe', 'vectorcraft-cli.exe') {
+    $Exe = Join-Path $Bin $Name
+    $Bytes = [IO.File]::ReadAllBytes($Exe)
+    $Pe = [BitConverter]::ToInt32($Bytes, 0x3c)
+    if ([BitConverter]::ToUInt16($Bytes, $Pe + 4) -ne 0x8664) { throw "$Name is not x64" }
+    $Major = [BitConverter]::ToUInt16($Bytes, $Pe + 0x48)
+    $Minor = [BitConverter]::ToUInt16($Bytes, $Pe + 0x4a)
+    if ($Major -gt 6 -or ($Major -eq 6 -and $Minor -gt 1)) { throw "$Name requires subsystem $Major.$Minor" }
+    $Imports = & dumpbin /nologo /imports $Exe
+    if ($LASTEXITCODE -ne 0) { throw "Could not inspect $Name imports" }
+    # Regression gate for known loader failures; actual Win7 runtime QA remains necessary.
+    if ($Imports -match '(?i)\b(GetSystemTimePreciseAsFileTime|ProcessPrng|WaitOnAddress|WakeByAddressSingle|WakeByAddressAll)\b|combase\.dll|bcryptprimitives\.dll|d3d12\.dll|api-ms-win-core-path-') {
+      throw "$Name directly imports a known post-Windows-7 API"
+    }
+  }
+  Invoke-Checked { & (Join-Path $Bin 'vectorcraft-cli.exe') --version }
+  $Stage = Join-Path $TargetDir ('windows7-portable-' + [Guid]::NewGuid().ToString('N'))
+  New-Item -ItemType Directory -Force $Stage | Out-Null
+  Copy-Item (Join-Path $Bin 'vectorcraft.exe'), (Join-Path $Bin 'vectorcraft-cli.exe') $Stage
+  Copy-Item LICENSE-MIT, LICENSE-APACHE, NOTICE $Stage
+  Copy-Item vendor/windows-link/license-mit (Join-Path $Stage 'LICENSE-windows-link-MIT')
+  Copy-Item vendor/windows-link/license-apache-2.0 (Join-Path $Stage 'LICENSE-windows-link-Apache-2.0')
+  Copy-Item docs/windows7.md (Join-Path $Stage 'WINDOWS7.md')
+  if ($env:CRAFT_FONTS_DIR) {
+    foreach ($ofl in Get-ChildItem (Join-Path $env:CRAFT_FONTS_DIR 'fonts\*\OFL.txt')) {
+      Copy-Item $ofl.FullName (Join-Path $Stage "OFL-$($ofl.Directory.Name).txt")
+    }
+  }
+  New-Item -ItemType Directory -Force dist/release | Out-Null
+  $Zip = Join-Path $Root 'dist/release/vectorcraft-windows7-x64-portable.zip'
+  Compress-Archive -Path (Join-Path $Stage '*') -DestinationPath $Zip -Force
+  Remove-Item -Recurse -Force $Stage
+  Get-Item $Zip
+  if ($Test) {
+    # Exercises the Windows code paths on the build host only; it doesn't prove Windows 7 runtime support.
+    Invoke-Checked { cargo "+$Toolchain" test -Z build-std=std,panic_unwind,test @CargoArgs }
+  }
+} finally {
+  [IO.File]::WriteAllBytes($Lock, $LockBytes)
+  [Environment]::SetEnvironmentVariable($FlagName, $OldFlags)
+  $env:VECTORCRAFT_REQUIRE_WINRES = $OldWinres
+  Pop-Location
+}

vendor/windows-link/Cargo.toml

@@ -0,0 +1,39 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2021"
+rust-version = "1.71"
+name = "windows-link"
+version = "0.2.1"
+build = false
+autolib = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
+description = "Linking for Windows"
+readme = "readme.md"
+categories = ["os::windows-apis"]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/microsoft/windows-rs"
+
+[lib]
+name = "windows_link"
+path = "src/lib.rs"
+
+[lints.rust]
+missing_unsafe_on_extern = "warn"
+
+[lints.rust.unexpected_cfgs]
+level = "warn"
+priority = 0
+check-cfg = ["cfg(windows_raw_dylib, windows_slim_errors)"]

vendor/windows-link/VECTORCRAFT-PATCH.md

@@ -0,0 +1,21 @@
+# Windows 7 x64 import compatibility
+
+Upstream: Microsoft windows-link 0.2.1, from crates.io, MIT OR Apache-2.0.
+Source: https://crates.io/crates/windows-link/0.2.1
+The original license texts are retained here.
+
+Only the non-x86 win7-target macro differs: CoTaskMemFree is imported from
+ole32.dll rather than combase.dll. windows-sys 0.61.2 otherwise causes native
+file dialogs to introduce a DLL absent on Windows 7. Ordinary targets retain
+upstream behavior. This is a binding correction, not a replacement allocator.
+
+Microsoft documents Ole32.dll and Windows 2000 as the API's minimum:
+https://learn.microsoft.com/en-us/windows/win32/api/combaseapi/nf-combaseapi-cotaskmemfree
+
+Only the experimental Windows 7 build uses this copy: packaging/windows/windows7.ps1
+passes `--config "patch.crates-io.windows-link.path='vendor/windows-link'"`. The
+workspace has no [patch], so every other build uses the crates.io crate, verified
+by the checksum in Cargo.lock.
+
+The Windows 7 packaging check rejects combase.dll to guard this fix. Remove this
+patch when upstream bindings provide the same compatibility and recheck imports.

vendor/windows-link/license-apache-2.0

@@ -0,0 +1,201 @@
+                                 Apache License
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+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+   See the License for the specific language governing permissions and
+   limitations under the License.

vendor/windows-link/license-mit

@@ -0,0 +1,21 @@
+    MIT License
+
+    Copyright (c) Microsoft Corporation.
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE

vendor/windows-link/readme.md

@@ -0,0 +1,26 @@
+## Linking for Windows
+
+The [windows-link](https://crates.io/crates/windows-link) crate provides the `link` macro that simplifies linking. The `link` macro is much the same as the one provided by [windows-targets](https://crates.io/crates/windows-targets) but uses `raw-dylib` and thus does not require import lib files.
+
+* [Getting started](https://kennykerr.ca/rust-getting-started/)
+* [Samples](https://github.com/microsoft/windows-rs/tree/master/crates/samples)
+* [Releases](https://github.com/microsoft/windows-rs/releases)
+
+Start by adding the following to your Cargo.toml file:
+
+```toml
+[dependencies.windows-link]
+version = "0.2"
+```
+
+Use the `link` macro to define the external functions you wish to call:
+
+```rust
+windows_link::link!("kernel32.dll" "system" fn SetLastError(code: u32));
+windows_link::link!("kernel32.dll" "system" fn GetLastError() -> u32);
+
+unsafe {
+    SetLastError(1234);
+    assert_eq!(GetLastError(), 1234);
+}
+```

vendor/windows-link/src/lib.rs

@@ -0,0 +1,57 @@
+#![doc = include_str!("../readme.md")]
+#![no_std]
+
+/// Defines an external function to import.
+#[cfg(all(windows, target_arch = "x86"))]
+#[macro_export]
+macro_rules! link {
+    ($library:literal $abi:literal $($link_name:literal)? fn $($function:tt)*) => (
+        #[link(name = $library, kind = "raw-dylib", modifiers = "+verbatim", import_name_type = "undecorated")]
+        extern $abi {
+            $(#[link_name=$link_name])?
+            pub fn $($function)*;
+        }
+    )
+}
+
+/// Defines an external function to import.
+#[cfg(all(windows, not(target_arch = "x86"), not(target_vendor = "win7")))]
+#[macro_export]
+macro_rules! link {
+    ($library:literal $abi:literal $($link_name:literal)? fn $($function:tt)*) => (
+        #[link(name = $library, kind = "raw-dylib", modifiers = "+verbatim")]
+        extern $abi {
+            $(#[link_name=$link_name])?
+            pub fn $($function)*;
+        }
+    )
+}
+
+/// Defines an external function to import.
+#[cfg(not(windows))]
+#[macro_export]
+macro_rules! link {
+    ($library:literal $abi:literal $($link_name:literal)? fn $($function:tt)*) => (
+        extern $abi {
+            pub fn $($function)*;
+        }
+    )
+}
+
+// VectorCraft compatibility patch: windows-sys 0.61.2 binds CoTaskMemFree to
+// combase.dll (Windows 8+). The same API is exported by ole32.dll on Windows 7.
+// Redirect only this known API; leave every other binding unchanged.
+#[cfg(all(windows, not(target_arch = "x86"), target_vendor = "win7"))]
+#[macro_export]
+macro_rules! link {
+    ("combase.dll" $abi:literal fn CoTaskMemFree $($signature:tt)*) => (
+        $crate::link!("ole32.dll" $abi fn CoTaskMemFree $($signature)*);
+    );
+    ($library:literal $abi:literal $($link_name:literal)? fn $($function:tt)*) => (
+        #[link(name = $library, kind = "raw-dylib", modifiers = "+verbatim")]
+        extern $abi {
+            $(#[link_name=$link_name])?
+            pub fn $($function)*;
+        }
+    )
+}