Remove the Ghostty engine

.github/workflows/build-terminal.yml

@@ -6,11 +6,7 @@ on:
       - "**"
     tags:
       - "v*"
-    paths-ignore:
-      - ".github/workflows/build-ghostty.yml"
   pull_request:
-    paths-ignore:
-      - ".github/workflows/build-ghostty.yml"
   workflow_dispatch:
     inputs:
       version:
@@ -142,12 +138,10 @@ jobs:
         with:
           path: |
             artifacts/tools
-            artifacts/ghostty-src
-            native/ghostty/*/*
             native/linux-pty/*/dt-pty-host
             native/noto-emoji/NotoColorEmoji.ttf
           # Never restore native sources or reuse binaries built from different inputs.
-          key: native-v2-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('native/**/*.ps1', 'native/ghostty/ghostty-upstream.json', 'native/linux-pty/dt-pty-host.c', 'native/noto-emoji/noto-emoji.json') }}
+          key: native-v3-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('native/**/*.ps1', 'native/zig.json', 'native/linux-pty/dt-pty-host.c', 'native/noto-emoji/noto-emoji.json') }}
 
       - name: Set up .NET
         uses: actions/setup-dotnet@v4
@@ -199,7 +193,7 @@ jobs:
         uses: actions/cache@v4
         with:
           path: artifacts/tools
-          key: zig-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('native/Zig.ps1', 'native/ghostty/ghostty-upstream.json') }}
+          key: zig-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('native/Zig.ps1', 'native/zig.json') }}
 
       - name: Build dt-pty-host for every Unix RID
         shell: pwsh
@@ -233,7 +227,7 @@ jobs:
         with:
           path: |
             native/noto-emoji/NotoColorEmoji.ttf
-          key: native-v2-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('native/**/*.ps1', 'native/ghostty/ghostty-upstream.json', 'native/linux-pty/dt-pty-host.c', 'native/noto-emoji/noto-emoji.json') }}
+          key: native-v3-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('native/**/*.ps1', 'native/zig.json', 'native/linux-pty/dt-pty-host.c', 'native/noto-emoji/noto-emoji.json') }}
 
       - name: Set up .NET
         uses: actions/setup-dotnet@v4
@@ -337,11 +331,9 @@ jobs:
         with:
           path: |
             artifacts/tools
-            artifacts/ghostty-src
-            native/ghostty/*/*
             native/linux-pty/*/dt-pty-host
             native/noto-emoji/NotoColorEmoji.ttf
-          key: native-v2-${{ runner.os }}-${{ runner.arch }}-${{ matrix.rid }}-${{ hashFiles('native/**/*.ps1', 'native/ghostty/ghostty-upstream.json', 'native/linux-pty/dt-pty-host.c', 'native/noto-emoji/noto-emoji.json') }}
+          key: native-v3-${{ runner.os }}-${{ runner.arch }}-${{ matrix.rid }}-${{ hashFiles('native/**/*.ps1', 'native/zig.json', 'native/linux-pty/dt-pty-host.c', 'native/noto-emoji/noto-emoji.json') }}
 
       - name: Set up .NET
         uses: actions/setup-dotnet@v4
@@ -378,11 +370,9 @@ jobs:
         with:
           path: |
             artifacts/tools
-            artifacts/ghostty-src
-            native/ghostty/*/*
             native/linux-pty/*/dt-pty-host
             native/noto-emoji/NotoColorEmoji.ttf
-          key: native-v2-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('native/**/*.ps1', 'native/ghostty/ghostty-upstream.json', 'native/linux-pty/dt-pty-host.c', 'native/noto-emoji/noto-emoji.json') }}
+          key: native-v3-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('native/**/*.ps1', 'native/zig.json', 'native/linux-pty/dt-pty-host.c', 'native/noto-emoji/noto-emoji.json') }}
 
       - name: Set up .NET
         uses: actions/setup-dotnet@v4
@@ -411,11 +401,9 @@ jobs:
         with:
           path: |
             artifacts/tools
-            artifacts/ghostty-src
-            native/ghostty/*/*
             native/linux-pty/*/dt-pty-host
             native/noto-emoji/NotoColorEmoji.ttf
-          key: native-v2-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('native/**/*.ps1', 'native/ghostty/ghostty-upstream.json', 'native/linux-pty/dt-pty-host.c', 'native/noto-emoji/noto-emoji.json') }}
+          key: native-v3-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('native/**/*.ps1', 'native/zig.json', 'native/linux-pty/dt-pty-host.c', 'native/noto-emoji/noto-emoji.json') }}
 
       - name: Set up .NET
         uses: actions/setup-dotnet@v4
@@ -460,11 +448,9 @@ jobs:
         with:
           path: |
             artifacts/tools
-            artifacts/ghostty-src
-            native/ghostty/*/*
             native/linux-pty/*/dt-pty-host
             native/noto-emoji/NotoColorEmoji.ttf
-          key: native-v2-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('native/**/*.ps1', 'native/ghostty/ghostty-upstream.json', 'native/linux-pty/dt-pty-host.c', 'native/noto-emoji/noto-emoji.json') }}
+          key: native-v3-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('native/**/*.ps1', 'native/zig.json', 'native/linux-pty/dt-pty-host.c', 'native/noto-emoji/noto-emoji.json') }}
 
       - name: Set up .NET
         uses: actions/setup-dotnet@v4

.github/workflows/test-iseberg.yml

@@ -57,11 +57,9 @@ jobs:
         with:
           path: |
             artifacts/tools
-            artifacts/ghostty-src
-            native/ghostty/*/*
             native/linux-pty/*/dt-pty-host
             native/noto-emoji/NotoColorEmoji.ttf
-          key: native-v2-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('native/**/*.ps1', 'native/ghostty/ghostty-upstream.json', 'native/linux-pty/dt-pty-host.c', 'native/noto-emoji/noto-emoji.json') }}
+          key: native-v3-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('native/**/*.ps1', 'native/zig.json', 'native/linux-pty/dt-pty-host.c', 'native/noto-emoji/noto-emoji.json') }}
 
       - name: Set up .NET
         uses: actions/setup-dotnet@v4
@@ -72,7 +70,7 @@ jobs:
         shell: pwsh
         run: ./scripts/Install-IsebergTestPowerShell.ps1
 
-      # A native cache miss downloads Zig and compiles Ghostty; keep that out of the test budget.
+      # A native cache miss downloads Zig and compiles dt-pty-host; keep that out of the test budget.
       - name: Restore native libraries
         timeout-minutes: 30
         shell: pwsh

.gitignore

@@ -27,10 +27,6 @@ Thumbs.db
 .DS_Store
 
 ## Native libraries built from source (see native/Restore-NativeLibraries.ps1)
-native/ghostty/**/*.dll
-native/ghostty/**/*.so
-native/ghostty/**/*.dylib
-native/ghostty/**/*.sha256
 native/linux-pty/**/dt-pty-host
 native/linux-pty/**/dt-pty-host.exe
 native/noto-emoji/NotoColorEmoji.ttf

AGENTS.md

@@ -47,11 +47,11 @@ already the primary scripting language for Windows packaging in this repo
 ## Native helpers
 
 - Linux/macOS PTY host: `native/linux-pty` (`dt-pty-host.c`)
-- Ghostty VT library: `native/ghostty`
 - Windows Explorer/toast helpers: `native/windows-shell`
 
-`dotnet build` restores these for the host RID automatically
-(`-p:SkipNativeRestore=true` to skip).
+`dotnet build` restores `dt-pty-host` for Linux/macOS host RIDs automatically
+(Zig version pinned in `native/zig.json`; `-p:SkipNativeRestore=true` to
+skip). Windows builds have nothing to restore.
 
 ## Platform packaging entry points
 

CONTRIBUTING.md

@@ -69,13 +69,13 @@ Do not point that tool at this repository.
 ## Native helpers
 
 - Linux/macOS PTY host: `native/linux-pty` (`dt-pty-host.c`; Zig `cc` on Linux, Apple clang on macOS)
-- Ghostty VT library: `native/ghostty` (Zig build of pinned Ghostty)
 - Windows Explorer/toast helpers: `native/windows-shell` (MSVC, gitignored `bin/`)
 
-`dotnet build` restores Ghostty and `dt-pty-host` for the host RID (Zig is
-downloaded into `artifacts/tools` on first use; a system `zig` of a different
-minor version than the pinned one is ignored, so it does not break the build). See
-[`native/ghostty/README.md`](native/ghostty/README.md). Pass
+`dotnet build` restores `dt-pty-host` for Linux/macOS host RIDs; Windows builds
+have nothing to restore. The Zig version is pinned in
+[`native/zig.json`](native/zig.json); Zig is downloaded into `artifacts/tools`
+on first use, and a system `zig` of a different minor version than the pinned
+one is ignored, so it does not break the build. Pass
 `-p:SkipNativeRestore=true` to skip.
 
 ## macOS
@@ -88,7 +88,7 @@ dotnet test Devolutions.Terminal.slnx
 pwsh scripts/Build-MacOsPackage.ps1 osx-arm64 2026.3.0 artifacts/packages
 ```
 
-`dotnet build` restores Ghostty and `dt-pty-host` for `osx-arm64` / `osx-x64`.
+`dotnet build` restores `dt-pty-host` for `osx-arm64` / `osx-x64`.
 The PTY host is compiled with Apple clang against the macOS 13 SDK. App-bundle
 packaging is Darwin-only; release builds are signed and notarized with a
 Developer ID identity (see [docs/macos.md](docs/macos.md) and

Devolutions.Terminal.slnx

@@ -3,7 +3,6 @@
     <Project Path="src/Devolutions.Terminal.Connection/Devolutions.Terminal.Connection.csproj" />
     <Project Path="src/Devolutions.Terminal.Control/Devolutions.Terminal.Control.csproj" />
     <Project Path="src/Devolutions.Terminal.Core/Devolutions.Terminal.Core.csproj" />
-    <Project Path="src/Devolutions.Terminal.Ghostty/Devolutions.Terminal.Ghostty.csproj" />
     <Project Path="src/Devolutions.Terminal.Render/Devolutions.Terminal.Render.csproj" />
     <Project Path="src/Devolutions.Terminal.Settings/Devolutions.Terminal.Settings.csproj" />
     <Project Path="src/Devolutions.Terminal.Broker/Devolutions.Terminal.Broker.csproj" />
@@ -27,7 +26,6 @@
     <Project Path="tests/Devolutions.Terminal.Connection.Tests/Devolutions.Terminal.Connection.Tests.csproj" />
     <Project Path="tests/Devolutions.Terminal.Control.Tests/Devolutions.Terminal.Control.Tests.csproj" />
     <Project Path="tests/Devolutions.Terminal.Core.Tests/Devolutions.Terminal.Core.Tests.csproj" />
-    <Project Path="tests/Devolutions.Terminal.Ghostty.Tests/Devolutions.Terminal.Ghostty.Tests.csproj" />
     <Project Path="tests/Devolutions.Terminal.Render.Tests/Devolutions.Terminal.Render.Tests.csproj" />
     <Project Path="tests/Devolutions.Terminal.Settings.Tests/Devolutions.Terminal.Settings.Tests.csproj" />
     <Project Path="tests/Devolutions.Terminal.Broker.Tests/Devolutions.Terminal.Broker.Tests.csproj" />

NOTICE.md

@@ -17,11 +17,6 @@ See the license in the Cascadia Code repository.
 Vendored under `native/noto-emoji/`. Licensed under the SIL Open Font License
 1.1. See `native/noto-emoji/LICENSE`.
 
-## Ghostty (`libghostty-vt`)
-
-Pinned native VT engine binaries under `native/ghostty/`. See
-`native/ghostty/LICENSE` and `docs/ghostty-engine.md`.
-
 ## AppImage type-2 runtime
 
 Linux AppImage packages embed a pinned type-2 runtime. See

README.md

@@ -5,7 +5,7 @@ as a self-contained **NativeAOT** desktop app, and rendered with **Avalonia 12**
 
 - **ConPTY** on Windows and a real **forkpty** transport on Linux and macOS
 - Azure Cloud Shell for remote Azure sessions
-- selectable built-in or **Ghostty** VT engine
+- a built-in VT engine written in C#
 - Windows Terminal-compatible `settings.json`, actions, keybindings, and `dt` CLI
 - source-integrated **Iseberg** PowerShell ISE profiles, with execution in an
   owned PowerShell subprocess and a NativeAOT desktop
@@ -104,18 +104,13 @@ windows is unavailable, and persisted layouts are neither restored nor saved.
 It is the per-launch equivalent of Windows Terminal's
 `compatibility.isolatedMode` setting, which Windows Terminal 1.23 removed.
 
-Set `"experimental.terminalEngine": "ghostty"` to use the pinned
-`libghostty-vt` engine globally. A profile can override it with `"builtin"` or
-`"ghostty"`. ConPTY remains the Windows process transport for both engines.
-
 The compiled-XAML settings editor is documented in
 [docs/settings-editor.md](docs/settings-editor.md).
 
 ## Architecture
 
 ```
 Devolutions.Terminal.Core         VT parser + text buffer + terminal engine
-Devolutions.Terminal.Ghostty      NativeAOT-safe libghostty-vt engine adapter
 Devolutions.Terminal.Render       Immutable plans + HarfBuzz/Skia glyph renderer
 Devolutions.Terminal.Connection   ConPTY + Linux PTY + Azure Cloud Shell + browser shell
 Devolutions.Terminal.Settings     Layered Windows Terminal-compatible JSON settings

docs/advanced-vt-protocols.md

@@ -3,9 +3,8 @@
 > [!NOTE]
 > Windows local sessions use the bundled Microsoft ConPTY runtime, including
 > `OpenConsole.exe`, rather than the OS copy that filters Sixel on some Windows
-> builds. With the built-in engine, Sixel producers such as `Get-XKCD -Show`
-> can render inline images. Other transports must likewise preserve graphics
-> payloads; the optional Ghostty engine does not expose image resources.
+> builds. Sixel producers such as `Get-XKCD -Show` can therefore render inline
+> images. Other transports must likewise preserve graphics payloads.
 
 `Devolutions.Terminal.Core` parses advanced string protocols without depending on Avalonia,
 Skia, Win32, or an image codec. It exposes decoded Sixel pixels and bounded
@@ -140,7 +139,6 @@ delete or reset does not paint stale cached pixels.
 - kitty cell/z-index/number-targeted deletes (`d=c/x/y/z/n`) — silent no-op;
   the cursor for `f=100` images without `r` stays put because Core retains codec
   bytes without decoding dimensions
-- Ghostty image projection (the pinned C ABI exposes no image resources)
 
 These gaps avoid remote I/O and renderer/input dependencies while keeping every
 implemented parser and downloadable resource path bounded.

docs/browser.md

@@ -21,7 +21,6 @@ Devolutions Terminal can run as a static Avalonia WebAssembly app. This is a
 | Desktop capability | Why it is out of scope |
 | --- | --- |
 | ConPTY / `forkpty` inside the page | No process or PTY APIs in the WASM sandbox. A loopback host process can own the PTY and bridge it over WebSocket. |
-| Ghostty (`libghostty-vt`) | Native library, not compiled to WASM |
 | `dt` CLI, broker, multi-window | Separate OS processes and named endpoints |
 | Package identity, toasts, jump lists, global hotkeys | Windows / desktop shell |
 | Native file dialogs, unrestricted filesystem | Browser sandbox (MEMFS only) |