csvkit: move out of pythonPackages

From https://csvkit.readthedocs.io/en/1.0.3/index.html:
> csvkit is a suite of *command-line tools* for [...]

pkgs/tools/text/csvkit/default.nix

@@ -0,0 +1,30 @@
+{ lib, python3, glibcLocales }:
+
+python3.pkgs.buildPythonApplication rec {
+  pname = "csvkit";
+  version = "1.0.3";
+
+  src = python3.pkgs.fetchPypi {
+    inherit pname version;
+    sha256 = "a6c859c1321d4697dc41252877249091681297f093e08d9c1e1828a6d52c260c";
+  };
+
+  propagatedBuildInputs = with python3.pkgs; [
+    agate agate-excel agate-dbf agate-sql six
+  ];
+
+  checkInputs = with python3.pkgs; [
+    glibcLocales nose
+  ];
+
+  checkPhase = ''
+    LC_ALL="en_US.UTF-8" nosetests -e test_csvsql
+  '';
+
+  meta = with lib; {
+    description = "A suite of command-line tools for converting to and working with CSV";
+    maintainers = with maintainers; [ vrthra ];
+    license = licenses.mit;
+    homepage = https://github.com/wireservice/csvkit;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -1250,6 +1250,8 @@ in
 
   crudini = callPackage ../tools/misc/crudini { };
 
+  csvkit = callPackage ../tools/text/csvkit { };
+
   cucumber = callPackage ../development/tools/cucumber {};
 
   daemontools = callPackage ../tools/admin/daemontools { };

pkgs/top-level/python-packages.nix

@@ -1195,8 +1195,6 @@ in {
 
   csscompressor = callPackage ../development/python-modules/csscompressor {};
 
-  csvkit =  callPackage ../development/python-modules/csvkit { };
-
   cufflinks = callPackage ../development/python-modules/cufflinks { };
 
   cupy = callPackage ../development/python-modules/cupy {