diff --git a/nix/dev-shell.nix b/nix/dev-shell.nix
--- a/nix/dev-shell.nix
+++ b/nix/dev-shell.nix
@@ -98,21 +98,9 @@
   JAVA_HOME = openjdk8.passthru.home;
 
   # shell commands to be ran upon entering shell
-  shellHook = let
-    socket = "mysql.sock";
-  in ''
-    if [[ "$OSTYPE" == 'linux'* ]]; then
-      export MYSQL_UNIX_PORT=''${XDG_RUNTIME_DIR:-/run/user/$UID}/${socket}
-      export ANDROID_SDK_ROOT=''${ANDROID_SDK_ROOT:-$HOME/Android/Sdk}
-    fi
-
-    if [[ "$OSTYPE" == 'darwin'* ]]; then
-      # Many commands for cocoapods expect the native BSD versions of commands
-      export PATH=/usr/bin:$PATH
-      MARIADB_DIR=''${XDG_DATA_HOME:-$HOME/.local/share}/MariaDB
-      export MYSQL_UNIX_PORT="$MARIADB_DIR"/${socket}
-      export ANDROID_SDK_ROOT=''${ANDROID_SDK_ROOT:-$HOME/Library/Android/sdk}
-    fi
+  shellHook = ''
+    # Set development environment variable defaults
+    source "${../scripts/source_development_defaults.sh}"
 
     # Provide decent bash prompt
     source "${better-prompt}/bin/better-prompt"
diff --git a/scripts/source_development_defaults.sh b/scripts/source_development_defaults.sh
new file mode 100644
--- /dev/null
+++ b/scripts/source_development_defaults.sh
@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+if [[ "$OSTYPE" == 'linux'* ]]; then
+  export MYSQL_UNIX_PORT=${XDG_RUNTIME_DIR:-/run/user/$UID}/mysql.sock
+  export ANDROID_SDK_ROOT=${ANDROID_SDK_ROOT:-$HOME/Android/Sdk}
+fi
+
+if [[ "$OSTYPE" == 'darwin'* ]]; then
+  # Many commands for cocoapods expect the native BSD versions of commands
+  export PATH="/usr/bin:$PATH"
+  MARIADB_DIR=${XDG_DATA_HOME:-$HOME/.local/share}/MariaDB
+  export MYSQL_UNIX_PORT="$MARIADB_DIR"/mysql.sock
+  export ANDROID_SDK_ROOT=${ANDROID_SDK_ROOT:-$HOME/Library/Android/sdk}
+fi