diff --git a/default/rules/default.py b/default/rules/default.py
index a1c2040..b937bf1 100644
--- a/default/rules/default.py
+++ b/default/rules/default.py
@@ -10,6 +10,7 @@
         'imctk',
         'ghdl',
         'ghdl-yosys-plugin',
+        'yosys-slang-plugin',
         'nextpnr-generic',
         'nextpnr-ice40',
         'nextpnr-ecp5',
diff --git a/default/rules/yosys.py b/default/rules/yosys.py
index 66aed4d..f86915f 100644
--- a/default/rules/yosys.py
+++ b/default/rules/yosys.py
@@ -16,6 +16,23 @@
 	license_file = 'LICENSE',
 )
 
+SourceLocation(
+	name = 'slang',
+	vcs = 'git',
+	location = 'https://github.com/MikePopoloski/slang',
+	revision = 'origin/master',
+	license_file = 'LICENSE',
+	license_build_only = True,
+)
+
+SourceLocation(
+	name = 'yosys-slang-plugin',
+	vcs = 'git',
+	location = 'https://github.com/povik/yosys-slang',
+	revision = 'origin/master',
+	license_file = 'LICENSE',
+)
+
 SourceLocation(
 	name = 'graphviz',
 	vcs = 'git',
@@ -54,6 +71,20 @@
 	arch = [ 'linux-x64', 'darwin-x64', 'darwin-arm64' ],
 )
 
+Target(
+	name = 'slang',
+	sources = [ 'slang'],
+	build_native = True, # using this for license only
+	license_build_only = True,
+)
+
+Target(
+	name = 'yosys-slang-plugin',
+	sources = [ 'yosys-slang-plugin' ],
+	dependencies = [ 'yosys' ],
+	arch = [ 'linux-x64', 'linux-arm64', 'windows-x64' ],
+)
+
 SourceLocation(
 	name = 'xdot',
 	vcs = 'git',
diff --git a/default/scripts/slang.sh b/default/scripts/slang.sh
new file mode 100644
index 0000000..e69de29
diff --git a/default/scripts/yosys-slang-plugin.sh b/default/scripts/yosys-slang-plugin.sh
new file mode 100644
index 0000000..046795e
--- /dev/null
+++ b/default/scripts/yosys-slang-plugin.sh
@@ -0,0 +1,8 @@
+cd yosys-slang-plugin
+sed -i 's/Windows.h/windows.h/g' third_party/slang/source/util/OS.cpp
+sed -i 's,/yosyshq/share,../yosys/yosyshq/share,g' ../yosys/yosyshq/bin/yosys-config
+sed -i 's,/yosyshq/include,../yosys/yosyshq/share/yosys/include,g' ../yosys/yosyshq/bin/yosys-config
+sed -i 's,/yosyshq/lib,../yosys/yosyshq/lib,g' ../yosys/yosyshq/bin/yosys-config
+make YOSYS_CONFIG=../yosys/yosyshq/bin/yosys-config
+mkdir -p ${OUTPUT_DIR}${INSTALL_PREFIX}/share/yosys/plugins
+cp -rf build/slang.so ${OUTPUT_DIR}${INSTALL_PREFIX}/share/yosys/plugins/.