txtw: init at 0.4

pkgs/tools/misc/txtw/default.nix

@@ -0,0 +1,25 @@
+{ stdenv, fetchFromGitHub, cairo }:
+
+stdenv.mkDerivation rec {
+  version = "0.4";
+  name = "txtw-${version}";
+
+  src = fetchFromGitHub {
+    owner = "baskerville";
+    repo = "txtw";
+    rev = "${version}";
+    sha256 = "17yjdgdd080fsf5r1wzgk6vvzwsa15gcwc9z64v7x588jm1ryy3k";
+  };
+
+  buildInputs = [ cairo ];
+
+  prePatch = ''sed -i "s@/usr/local@$out@" Makefile'';
+
+  meta = with stdenv.lib; {
+    description = "Compute text widths";
+    homepage = https://github.com/baskerville/txtw;
+    maintainers = with maintainers; [ lihop ];
+    license = licenses.unlicense;
+    platforms = platforms.linux;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -3338,6 +3338,8 @@ let
 
   txt2tags = callPackage ../tools/text/txt2tags { };
 
+  txtw = callPackage ../tools/misc/txtw { };
+
   u9fs = callPackage ../servers/u9fs { };
 
   ucl = callPackage ../development/libraries/ucl { };