twurl: init at 0.9.6

Twurl gives more low-level access to the Twitter API than the
`t` tool that's already available in nixpkgs right now

pkgs/tools/misc/twurl/Gemfile

@@ -0,0 +1,3 @@
+source "https://rubygems.org"
+
+gem 'twurl'

pkgs/tools/misc/twurl/Gemfile.lock

@@ -0,0 +1,15 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    oauth (0.5.6)
+    twurl (0.9.6)
+      oauth (~> 0.4)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  twurl
+
+BUNDLED WITH
+   2.1.4

pkgs/tools/misc/twurl/default.nix

@@ -0,0 +1,17 @@
+{ lib, bundlerApp, bundlerUpdateScript }:
+
+bundlerApp {
+  pname = "twurl";
+  gemdir = ./.;
+  exes = [ "twurl" ];
+
+  passthru.updateScript = bundlerUpdateScript "twurl";
+
+  meta = with lib; {
+    description = "OAuth-enabled curl for the Twitter API";
+    homepage    = "https://github.com/twitter/twurl";
+    license     = "MIT";
+    maintainers = with maintainers; [ brecht ];
+    platforms   = platforms.unix;
+  };
+}

pkgs/tools/misc/twurl/gemset.nix

@@ -0,0 +1,23 @@
+{
+  oauth = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1zwd6v39yqfdrpg1p3d9jvzs9ljg55ana2p06m0l7qn5w0lgx1a0";
+      type = "gem";
+    };
+    version = "0.5.6";
+  };
+  twurl = {
+    dependencies = ["oauth"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1jgsxa0cnkajnsxxlsrgl2wq3m7khaxvr0rcir4vwbc1hx210700";
+      type = "gem";
+    };
+    version = "0.9.6";
+  };
+}

pkgs/top-level/all-packages.nix

@@ -9441,6 +9441,8 @@ in
 
   twtxt = python3Packages.callPackage ../applications/networking/twtxt { };
 
+  twurl = callPackage ../tools/misc/twurl { };
+
   txr = callPackage ../tools/misc/txr { stdenv = clangStdenv; };
 
   txt2man = callPackage ../tools/misc/txt2man { };