internal/rosa/package: migrate remaining trivial packages

The rest are migrated individually.

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

internal/rosa/package/zstd.az

@@ -0,0 +1,31 @@
+package zstd {
+	description = "a fast compression algorithm";
+	website = "https://facebook.github.io/zstd";
+	anitya = 12083;
+
+	version* = "1.5.7";
+	source = remoteGitHubRelease {
+		suffix = "facebook/zstd";
+		tag = "v"+version;
+		name = "zstd-"+version+".tar.gz";
+		checksum = "4XhfR7DwVkwo1R-TmYDAJOcx9YXv9WSFhcFUe3hWEAMmdMLPhFaznCqYIA19_xxV";
+		compress = gzip;
+	};
+
+	// tests Makefile assumes writable source
+	writable = true;
+	chmod = true;
+
+	exec = cmake {
+		append = [ "build", "cmake" ];
+		test = `
+make -C /usr/src/zstd/tests datagen
+ZSTD_BIN=/cure/programs/zstd /usr/src/zstd/tests/playTests.sh
+`;
+	};
+
+	inputs = [
+		make,
+		diffutils,
+	];
+}