diff --git a/.github/workflows/ccpp.yml b/.github/workflows/ccpp.yml
index fe34f1587..4228fe23a 100644
--- a/.github/workflows/ccpp.yml
+++ b/.github/workflows/ccpp.yml
@@ -36,6 +36,7 @@ jobs:
           make
           mingw-w64-i686-gcc
           mingw-w64-i686-lua
+          mingw-w64-i686-nsis
           ninja
           bison
           flex
@@ -44,5 +45,12 @@ jobs:
     - uses: actions/checkout@v3
     - name: build
       run: |
-        make
-
+        make LDFLAGS=-s CFLAGS=-Os
+    - name: package
+      run: |
+        make ack-setup.exe
+    - name: upload setup
+      uses: actions/upload-artifact@v2
+      with:
+        name: ${{ github.event.repository.name }}.${{ github.sha }}
+        path: ack-setup.exe
diff --git a/Makefile b/Makefile
index 4db53e18e..7e04293f0 100644
--- a/Makefile
+++ b/Makefile
@@ -15,8 +15,12 @@ ACK_TEMP_DIR ?= /tmp
 # install it and just want to run the ACK from the build directory
 # (/tmp/ack-build/staging, by default), leave this as $(INSDIR).
 
+ifeq ($(OS),Windows_NT)
+PREFIX ?= c:/Program Files (x86)/Amsterdam Compiler Kit
+else
 PREFIX ?= /usr/local
 #PREFIX = $(INSDIR)
+endif
 
 # Where do you want to put the object files used when building?
 
@@ -119,12 +123,16 @@ $(build-file): first/ackbuilder.lua Makefile $(lua-files)
 		INSDIR=$(INSDIR) \
 		PLATIND=$(PLATIND) \
 		PLATDEP=$(PLATDEP) \
-		PREFIX=$(PREFIX) \
+		PREFIX="$(PREFIX)" \
 		AR=$(AR) \
 		CC=$(CC) \
 		CFLAGS="$(CFLAGS)" \
+		LDFLAGS="$(LDFLAGS)" \
 		> $(build-file)
 
+ack-setup.exe: etc/windows-installer.nsi
+	makensis -dBUILDDIR=$(BUILDDIR)/staging -dOUTFILE="$$(realpath $@)" $<
+
 install:
 	mkdir -p $(PREFIX)
 	tar cf - -C $(INSDIR) . | tar xvf - -C $(PREFIX)
diff --git a/etc/windows-installer.nsi b/etc/windows-installer.nsi
new file mode 100644
index 000000000..7a1abe9a0
--- /dev/null
+++ b/etc/windows-installer.nsi
@@ -0,0 +1,79 @@
+!include MUI2.nsh
+
+Name "The Amsterdam Compiler Kit"
+OutFile "${OUTFILE}"
+Unicode True
+
+InstallDir "$PROGRAMFILES\Amsterdam Compiler Kit"
+
+RequestExecutionLevel admin
+SetCompressor /solid lzma
+
+;--------------------------------
+
+!define MUI_WELCOMEPAGE_TITLE "The Amsterdam Compiler Kit"
+!define MUI_WELCOMEPAGE_TEXT "The ACK is a compiler toolchain supporting a \
+	variety of frontend and backends. It's not easy to use, so if you don't \
+	know what you're doing you shouldn't install this.$\r$\n\
+	$\r$\n\
+	This wizard will install the ACK on your computer.$\r$\n\
+	$\r$\n\
+	$_CLICK"
+
+!define MUI_HEADERIMAGE
+!define MUI_HEADERIMAGE_BITMAP "${NSISDIR}\Contrib\Graphics\Header\nsis.bmp"
+!define MUI_ABORTWARNING
+
+!insertmacro MUI_PAGE_WELCOME
+
+!define MUI_COMPONENTSPAGE_NODESC
+!insertmacro MUI_PAGE_COMPONENTS
+!insertmacro MUI_PAGE_DIRECTORY
+!insertmacro MUI_PAGE_INSTFILES
+
+!define MUI_FINISHPAGE_TITLE "Installation complete"
+!define MUI_FINISHPAGE_TEXT_LARGE
+!define MUI_FINISHPAGE_TEXT "The ACK is now ready to use, but \
+	hasn't been added to your path.$\r$\n\
+	$\r$\n\
+	Have fun!"
+
+!insertmacro MUI_PAGE_FINISH
+
+!insertmacro MUI_UNPAGE_CONFIRM
+!insertmacro MUI_UNPAGE_INSTFILES
+!insertmacro MUI_UNPAGE_FINISH
+
+!insertmacro MUI_LANGUAGE "English"
+
+; The stuff to install
+Section "The ACK (required)"
+	SectionIn RO
+	SetOutPath $INSTDIR
+	File /r "${BUILDDIR}\*.*"
+	;File /oname=wordgrinder.exe "bin\wordgrinder-builtin-sdl-release.exe"
+	;File /oname=cwordgrinder.exe "bin\wordgrinder-builtin-wincon-release.exe"
+	;File "README.wg"
+	;File "licenses\COPYING.*"
+
+	;CreateDirectory $INSTDIR\Dictionaries
+	;File /oname=Dictionaries\British.dictionary "extras\british.dictionary"
+	;File /oname=Dictionaries\American-Canadian.dictionary "extras\american-canadian.dictionary"
+
+	; Write the uninstall keys for Windows
+	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\WordGrinder" "DisplayName" "WordGrinder for Windows"
+	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\WordGrinder" "UninstallString" '"$INSTDIR\uninstall.exe"'
+	WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\WordGrinder" "NoModify" 1
+	WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\WordGrinder" "NoRepair" 1
+	WriteUninstaller "uninstall.exe"
+SectionEnd
+
+;--------------------------------
+
+; Uninstaller
+
+Section "Uninstall"
+	; Remove registry keys
+	; Remove files and uninstaller
+	RMDir /r $INSTDIR
+SectionEnd