l 5: add mk_sql_pair

lass/5pkgs/default.nix

@@ -8,6 +8,7 @@
       ublock = pkgs.callPackage ./firefoxPlugins/ublock.nix {};
       vimperator = pkgs.callPackage ./firefoxPlugins/vimperator.nix {};
     };
+    mk_sql_pair = pkgs.callPackage ./mk_sql_pair/default.nix {};
     mpv-poll = pkgs.callPackage ./mpv-poll/default.nix {};
     xmonad-lass =
       let src = pkgs.writeNixFromCabal "xmonad-lass.nix" ./xmonad-lass; in

lass/5pkgs/mk_sql_pair/default.nix

@@ -0,0 +1,19 @@
+{ pkgs, ... }:
+
+pkgs.writeScriptBin "mk_sql_pair" ''
+  #!/bin/sh
+
+  name=$1
+  password=$2
+
+  if [ $# -ne 2 ]; then
+    echo '$1=name, $2=password'
+    exit 23;
+  fi
+
+  cat <<EOF
+    create database $name;
+    create user $name;
+    grant all on $name.* to $name@'localhost' identified by '$password';
+  EOF
+''