Metro 1.1 Released

I’ve just released version 1.1 of Metro and updated the QuickStart Guide to reflect this new version. Currently, the only way to install Metro is to use git – see the improved QuickStart Guide for more information. Here’s a list of all the improvements to Metro:

• Reorganized /etc/metro directory
• NEW: "Builds" defined in /etc/metro/builds/ - all key build information now in a single file for convenience.
• NEW: "FSLayouts" defined in /etc/metro/fslayouts/ - all mirror-related file names and path structures now in a single file.
• NEW: OpenVZ template support for Funtoo stages, enabled in  scripts/build.sh
• NEW: Reorganized file paths inside /usr/lib/metro.
• NEW: Working gentoo/emerge target, when you just want to take a stage3 and create something new by emerging stuff in it.
• NEW: Targets now have an OS prefix. What was target: snapshot is now target: gentoo/snapshot, etc. The path structure in /usr/lib/metro has also been improved so that people can easily create a /usr/lib/metro/targets/myos/ directory and start hacking.
• NEW: Several parser bug fixes
• FIX: Improvements to metro have allowed scripts/build.sh to be simplified.
• NEW: Improved error and exception handling
• NEW: Enhanced Portage git snapshot support - Metro will now keep a local cache of a git repository so it doesn't need to re-clone it every time, saving bandwidth. This cache location is defined in the path/cache/git variable in /etc/metro/metro.conf.
• Embedded Python interpreter can no longer reference Metro metadata directly. This prevents weird side-effects from occurring.
• NEW: Conditional expansion - a variable such as $[foo?] will get expanded to "yes" if defined and "no" if not defined, providing easy integration with scripts so you don't throw a parser exception by referencing an undefined variable.
  * NEW: "zap" expansion - in a multi-line element, a variable such as $[foo:zap] will get expanded to the name of the variable if it is defined. If it is not defined, however, then the entire line will be deleted from the output. This allows very compact conditional lines in templates like this: CFLAGS=$[portage/CFLAGS:zap]
• FIX: MAKEOPTS now properly applied to Gentoo builds, speeding up builds on multi-core systems significantly.
• NEW: [options parse/lax] and [options parse/strict] to disable and enable strict parsing, respectively. When lax parsing is enabled, any referenced undefined variables in multi-line elements will get dummy values, but an exception will not be thrown.
• NEW: conditonal sections - it's now possible to write:
  [section foo when bar]
    This is equivalent to the old:
  [section foo]
  [when bar]
• NEW: conditional equality - it's now possible for all conditionals to test for equality, such as:
  [section foo when bar is oni]
  or
  [when bar is oni]
• NEW: conditional list-match - it's now possible to see if an element matches a list of values, such as:
  [section foo when target/subarch is x86 amd64 pentium4] This section will be active if target/subarch has a value that matches one of the specified values.
• CHANGE: multi-line elements that are referenced inside other multi-line elements, using the syntax $[[foo]], will only get expanded if they appear at the beginning of the line. This allows them to easily be commented out by prefixing them by a "#" or any other character. In this case, the $[[foo]] will not be expanded and will be passed to the output as-is.
• CHANGE: path/mirror/srcstage and path/mirror/deststage have been renamed to /path/mirror/source and path/mirror/target respectively.

Enjoy!