fix: Windows compatibility

.github/actions/setup-cmux/action.yml

@@ -62,3 +62,14 @@ runs:
           sudo apt-get install -y --no-install-recommends imagemagick
         fi
         convert --version | head -1
+    - name: Install ImageMagick (Windows)
+      if: inputs.install-imagemagick == 'true' && runner.os == 'Windows'
+      shell: powershell
+      run: |
+        if (Get-Command magick -ErrorAction SilentlyContinue) {
+          Write-Host "✅ ImageMagick already available"
+        } else {
+          Write-Host "📦 Installing ImageMagick..."
+          choco install -y imagemagick
+        }
+        magick --version | Select-Object -First 1

.github/workflows/release.yml

@@ -58,3 +58,34 @@ jobs:
         run: bun x electron-builder --linux --publish always
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  build-windows:
+    name: Build and Release Windows
+    runs-on: windows-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0 # Required for git describe to find tags
+
+      - uses: ./.github/actions/setup-cmux
+        with:
+          install-imagemagick: true
+
+      - name: Install GNU Make (for build)
+        run: choco install -y make
+
+      - name: Verify tools
+        shell: bash
+        run: |
+          make --version
+          bun --version
+          magick --version | head -1
+
+      - name: Build application
+        run: bun run build
+
+      - name: Package and publish for Windows (.exe)
+        run: bun x electron-builder --win --publish always
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

Makefile

@@ -24,6 +24,13 @@
 #   Branches reduce reproducibility - builds should fail fast with clear errors
 #   if dependencies are missing, not silently fall back to different behavior.
 
+ifeq ($(OS),Windows_NT)
+SHELL := /usr/bin/bash
+else
+SHELL := /bin/bash
+endif
+.SHELLFLAGS := -eu -o pipefail -c
+
 # Enable parallel execution by default (only if user didn't specify -j)
 ifeq (,$(filter -j%,$(MAKEFLAGS)))
 MAKEFLAGS += -j
@@ -92,20 +99,21 @@ help: ## Show this help message
 
 ## Development
 dev: node_modules/.installed build-main ## Start development server (Vite + tsgo watcher for 10x faster type checking)
-	@bun x concurrently -k \
-		"bun x concurrently \"$(TSGO) -w -p tsconfig.main.json\" \"bun x tsc-alias -w -p tsconfig.main.json\"" \
-		"vite"
+	@npx concurrently -k --raw \
+		"$(TSGO) -w -p tsconfig.main.json" \
+		"bun tsc-alias -w -p tsconfig.main.json" \
+		"bun x vite"
 
 dev-server: node_modules/.installed build-main ## Start server mode with hot reload (backend :3000 + frontend :5173). Use VITE_HOST=0.0.0.0 BACKEND_HOST=0.0.0.0 for remote access
 	@echo "Starting dev-server..."
 	@echo "  Backend (IPC/WebSocket): http://$(or $(BACKEND_HOST),localhost):$(or $(BACKEND_PORT),3000)"
 	@echo "  Frontend (with HMR):     http://$(or $(VITE_HOST),localhost):$(or $(VITE_PORT),5173)"
 	@echo ""
 	@echo "For remote access: make dev-server VITE_HOST=0.0.0.0 BACKEND_HOST=0.0.0.0"
-	@bun x concurrently -k \
-		"bun x concurrently \"$(TSGO) -w -p tsconfig.main.json\" \"bun x tsc-alias -w -p tsconfig.main.json\"" \
+	@npx concurrently -k \
+		"npx concurrently \"$(TSGO) -w -p tsconfig.main.json\" \"bun x tsc-alias -w -p tsconfig.main.json\"" \
 		"bun x nodemon --watch dist/main.js --watch dist/main-server.js --delay 500ms --exec 'node dist/main.js server --host $(or $(BACKEND_HOST),localhost) --port $(or $(BACKEND_PORT),3000)'" \
-		"CMUX_VITE_HOST=$(or $(VITE_HOST),127.0.0.1) CMUX_VITE_PORT=$(or $(VITE_PORT),5173) VITE_BACKEND_URL=http://$(or $(BACKEND_HOST),localhost):$(or $(BACKEND_PORT),3000) vite"
+		"CMUX_VITE_HOST=$(or $(VITE_HOST),127.0.0.1) CMUX_VITE_PORT=$(or $(VITE_PORT),5173) VITE_BACKEND_URL=http://$(or $(BACKEND_HOST),localhost):$(or $(BACKEND_PORT),3000) bun x vite"
 
 
 
@@ -162,16 +170,16 @@ MAGICK_CMD := $(shell command -v magick 2>/dev/null || command -v convert 2>/dev
 build/icon.png: docs/img/logo.webp
 	@echo "Generating Linux icon..."
 	@mkdir -p build
-	@$(MAGICK_CMD) docs/img/logo.webp -resize 512x512 build/icon.png
+	@"$(MAGICK_CMD)" docs/img/logo.webp -resize 512x512 build/icon.png
 
 build/icon.icns: docs/img/logo.webp
 	@echo "Generating macOS icon..."
 	@mkdir -p build/icon.iconset
 	@for size in 16 32 64 128 256 512; do \
-		$(MAGICK_CMD) docs/img/logo.webp -resize $${size}x$${size} build/icon.iconset/icon_$${size}x$${size}.png; \
+		"$(MAGICK_CMD)" docs/img/logo.webp -resize $${size}x$${size} build/icon.iconset/icon_$${size}x$${size}.png; \
 		if [ $$size -le 256 ]; then \
 			double=$$((size * 2)); \
-			$(MAGICK_CMD) docs/img/logo.webp -resize $${double}x$${double} build/icon.iconset/icon_$${size}x$${size}@2x.png; \
+			"$(MAGICK_CMD)" docs/img/logo.webp -resize $${double}x$${double} build/icon.iconset/icon_$${size}x$${size}@2x.png; \
 		fi; \
 	done
 	@iconutil -c icns build/icon.iconset -o build/icon.icns

bun.lock

@@ -1,5 +1,6 @@
 {
   "lockfileVersion": 1,
+  "configVersion": 0,
   "workspaces": {
     "": {
       "name": "@coder/cmux",
@@ -70,7 +71,7 @@
         "class-variance-authority": "^0.7.1",
         "clsx": "^2.1.1",
         "cmdk": "^1.0.0",
-        "concurrently": "^8.2.0",
+        "concurrently": "^9.2.1",
         "dotenv": "^17.2.3",
         "electron": "^38.2.1",
         "electron-builder": "^24.6.0",
@@ -1198,7 +1199,7 @@
 
     "concat-map": ["concat-map@0.0.1", "", {}, "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg=="],
 
-    "concurrently": ["concurrently@8.2.2", "", { "dependencies": { "chalk": "^4.1.2", "date-fns": "^2.30.0", "lodash": "^4.17.21", "rxjs": "^7.8.1", "shell-quote": "^1.8.1", "spawn-command": "0.0.2", "supports-color": "^8.1.1", "tree-kill": "^1.2.2", "yargs": "^17.7.2" }, "bin": { "conc": "dist/bin/concurrently.js", "concurrently": "dist/bin/concurrently.js" } }, "sha512-1dP4gpXFhei8IOtlXRE/T/4H88ElHgTiUzh71YUmtjTEHMSRS2Z/fgOxHSxxusGHogsRfxNq1vyAwxSC+EVyDg=="],
+    "concurrently": ["concurrently@9.2.1", "", { "dependencies": { "chalk": "4.1.2", "rxjs": "7.8.2", "shell-quote": "1.8.3", "supports-color": "8.1.1", "tree-kill": "1.2.2", "yargs": "17.7.2" }, "bin": { "conc": "dist/bin/concurrently.js", "concurrently": "dist/bin/concurrently.js" } }, "sha512-fsfrO0MxV64Znoy8/l1vVIjjHa29SZyyqPgQBwhiDcaW8wJc2W3XWVOGx4M3oJBnv/zdUZIIp1gDeS98GzP8Ng=="],
 
     "confbox": ["confbox@0.2.2", "", {}, "sha512-1NB+BKqhtNipMsov4xI/NnhCKp9XG9NamYp5PVm9klAT0fsrNPjaFICsCFhNhwZJKNh7zB/3q8qXz0E9oaMNtQ=="],
 
@@ -1316,8 +1317,6 @@
 
     "data-view-byte-offset": ["data-view-byte-offset@1.0.1", "", { "dependencies": { "call-bound": "^1.0.2", "es-errors": "^1.3.0", "is-data-view": "^1.0.1" } }, "sha512-BS8PfmtDGnrgYdOonGZQdLZslWIeCGFP9tpan0hi1Co2Zr2NKADsvGYA8XxuG/4UWgJ6Cjtv+YJnB6MM69QGlQ=="],
 
-    "date-fns": ["date-fns@2.30.0", "", { "dependencies": { "@babel/runtime": "^7.21.0" } }, "sha512-fnULvOpxnC5/Vg3NCiWelDsLiUc9bRwAPs/+LfTLNvetFCtCTN+yQz15C/fs4AwX1R9K5GLtLfn8QW+dWisaAw=="],
-
     "dayjs": ["dayjs@1.11.18", "", {}, "sha512-zFBQ7WFRvVRhKcWoUh+ZA1g2HVgUbsZm9sbddh8EC5iv93sui8DVVz1Npvz+r6meo9VKfa8NyLWBsQK1VvIKPA=="],
 
     "debug": ["debug@4.4.3", "", { "dependencies": { "ms": "^2.1.3" } }, "sha512-RGwwWnwQvkVfavKVt22FGLw+xYSdzARwm0ru6DhTVA3umU5hZc28V3kO4stgYryrTlLpuvgI9GiijltAjNbcqA=="],
@@ -2572,8 +2571,6 @@
 
     "space-separated-tokens": ["space-separated-tokens@2.0.2", "", {}, "sha512-PEGlAwrG8yXGXRjW32fGbg66JAlOAwbObuqVoJpv/mRgoWDQfgH1wDPvtzWyUSNAXBGSk8h755YDbbcEy3SH2Q=="],
 
-    "spawn-command": ["spawn-command@0.0.2", "", {}, "sha512-zC8zGoGkmc8J9ndvml8Xksr1Amk9qBujgbF0JAIWO7kXr43w0h/0GJNM/Vustixu+YE8N/MTrQ7N31FvHUACxQ=="],
-
     "spawn-wrap": ["spawn-wrap@2.0.0", "", { "dependencies": { "foreground-child": "^2.0.0", "is-windows": "^1.0.2", "make-dir": "^3.0.0", "rimraf": "^3.0.0", "signal-exit": "^3.0.2", "which": "^2.0.1" } }, "sha512-EeajNjfN9zMnULLwhZZQU3GWBoFNkbngTUPfaawT4RkMiviTxcX0qfhVbGey39mfctfDHkWtuecgQ8NJcyQWHg=="],
 
     "spawnd": ["spawnd@5.0.0", "", { "dependencies": { "exit": "^0.1.2", "signal-exit": "^3.0.3", "tree-kill": "^1.2.2", "wait-port": "^0.2.9" } }, "sha512-28+AJr82moMVWolQvlAIv3JcYDkjkFTEmfDc503wxrF5l2rQ3dFz6DpbXp3kD4zmgGGldfM4xM4v1sFj/ZaIOA=="],

package.json

@@ -111,7 +111,7 @@
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "cmdk": "^1.0.0",
-    "concurrently": "^8.2.0",
+    "concurrently": "^9.2.1",
     "dotenv": "^17.2.3",
     "electron": "^38.2.1",
     "electron-builder": "^24.6.0",
@@ -202,7 +202,9 @@
       "artifactName": "${productName}-${version}-${arch}.${ext}"
     },
     "win": {
-      "target": "nsis"
+      "target": "nsis",
+      "icon": "build/icon.png",
+      "artifactName": "${productName}-${version}-${arch}.${ext}"
     }
   }
 }

src/components/NewWorkspaceModal.tsx

@@ -248,7 +248,12 @@ const NewWorkspaceModal: React.FC<NewWorkspaceModalProps> = ({
           <code className="block break-all">
             {runtimeMode === RUNTIME_MODE.SSH
               ? `${sshHost || "<host>"}:~/cmux/${branchName || "<branch-name>"}`
-              : `~/.cmux/src/${projectName}/${branchName || "<branch-name>"}`}
+              : (() => {
+                  const isWindows = window.api?.platform === "win32";
+                  const homePlaceholder = isWindows ? "%USERPROFILE%" : "~";
+                  const sep = isWindows ? "\\" : "/";
+                  return `${homePlaceholder}${sep}.cmux${sep}src${sep}${projectName}${sep}${branchName || "<branch-name>"}`;
+                })()}
           </code>
         </ModalInfo>
 

src/runtime/SSHRuntime.ts

@@ -29,8 +29,9 @@ import { getControlPath } from "./sshConnectionPool";
 /**
  * Shescape instance for bash shell escaping.
  * Reused across all SSH runtime operations for performance.
+ * Shescape properly auto-detects win32 & linux shells, but fails on macOS.
  */
-const shescape = new Shescape({ shell: "bash" });
+const shescape = new Shescape({ shell: process.platform === "darwin" ? "bash" : true });
 
 /**
  * SSH Runtime Configuration