internal/rosa/package: migrate glslang

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/package/glslang.az

@@ -0,0 +1,31 @@
+package glslang {
+	description = "reference front end for GLSL/ESSL";
+	website = "https://github.com/KhronosGroup/glslang";
+	anitya = 205796;
+
+	version* = "16.3.0";
+	source = remoteGitHub {
+		suffix = "KhronosGroup/glslang";
+		tag = version;
+		checksum = "xyqDf8k3-D0_BXHGi0uLgMglnJ05Rf3j73QgbDs3sGtKNdBIQhY8JfqX1NcNoJQN";
+	};
+
+	// test suite writes to source
+	writable = true;
+	chmod = true;
+
+	exec = cmake {
+		cache = {
+			"BUILD_SHARED_LIBS": "ON";
+			"ALLOW_EXTERNAL_SPIRV_TOOLS": "ON";
+		};
+	};
+
+	inputs = [
+		python,
+		bash,
+		diffutils,
+
+		spirv-tools,
+	];
+}