Mirrors can now be declared using the `mirror` method which works similar to
`depends_on` and takes the same arguments as `url`.

The formula class now has a public `fetch` method that cycles through the
mirror list if the downloader for the primary URL throws a `DownloadError`.
Other brew commands, like brew-fetch, also benefit from mirror support by using
this method.

Closes Homebrew/homebrew#7574.

`DownloadError` is an exception that download stratigies can throw to indicate
that a fetch was incomplete due to a failure in communication.

The `curl` method in `utils.rb` has been upgraded to throw a `DownloadError` if
something bad happens to `curl` execution.

Commit 00cd16f changed oudated_brews to return a list of Formula
objects rather than a list of lists containing formula information.

Now we must access the formula name by using the 'name' accessor rather
than an array index.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Fixes Homebrew/homebrew#7528.
Closes Homebrew/homebrew#7572.

Previously, `outdated_brews` returned a list of lists---each containing three
components of a Formula object:

  - f.rack
  - f.name
  - f.version

Frequently more information is required which necessitates back-casting from
`name` to a Formula object---simpy returning formula objects removes this step.

`rack` is a commonly used alias for `formula.prefix.parent`---so common that it
gets defined and used quite a bit. This patch makes `rack` an official method
of the `Formula` class.

Refs Homebrew/homebrew#5188.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

When installing with --HEAD, cached repo clones do "git fetch origin"
followed by "git reset --hard". This will only reset the working tree
and index to the state of the local HEAD, but Homebrew will think it's
updated and install anyway. "git reset --hard origin/master" will
achieve the desired result.

Should fix Homebrew/homebrew#7613.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Otherwise, for formula that making the very first install into `sbin`, the
following line will fail with a critical error:

    bin = (HOMEBREW_PREFIX/bin.basename).realpath.to_s

Because `sbin` will not exist until after `link` runs.

This isn't very clean as it moves `check_PATH` away from the other checks in
`caveats`, but I couldn't think of a better hotfix that did not require a bit
of code shuffling and re-writing.

`brew-unpack` now runs `Formula.brew` and copies the stage directory to the
unpack location. This provides two improvements:

  - Patches may be applied. The `patch` metho of the Formula class is
    overloaded such that patches are only applied if the `--patch` option is
    passed to `brew unpack`.

  - Formula can respond better to flags passed by `ARGV`.

Some trickery is pulled to ensure `DATA` is correctly set for each unpacked
formula.

`brew options --installed` will print options for formulae that are
already installed.

Closes Homebrew/homebrew#7565.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

We now prefer "ftpmirror.gnu.org" over the main FTP site.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

adding 'install' to the command line breaks things

Closes Homebrew/homebrew#7489.

Signed-off-by: Charlie Sharpsteen <source@sharpsteen.net>

Pass message and formula to super so useful output occurs.

Closes Homebrew/homebrew#7507.

Signed-off-by: Charlie Sharpsteen <source@sharpsteen.net>

`git status -s` would spit out "fatal: not a git repository" when not in
HOMEBREW_PREFIX or a child directory of HOMEBREW_PREFIX. Specify a
git-dir and work-tree to fix this.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Closes Homebrew/homebrew#7527.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

The compiler setting in the xcodeproj is overridden by the CC setting in the environment. This is a bit insane IMO since the xcodeproj itself has detailed decisions about what tools to use.

Fixes Homebrew/homebrew#6406.

Refs Homebrew/homebrew#7525.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Document the '--versions' option for `brew list`.
The two forms of the `list` command as previously documented clearly do
different things, but after documenting '--versions', their functions do
overlap a bit, so we combine them and clarify the different invocations.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

 - Remove unnecessary linefeeds above "ENVIRONMENT"

 - Use the word "example" rather than "sample" to be more consistent
   throughout the documentation

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Refs Homebrew/homebrew#7454.

This makes sense, I assure you. Fixes Homebrew/homebrew#7458.

Even though we are just guessing if it doesn't correspond to any of the others…

This is used with fails_with_llvm so that if GCC cannot be found (and we suspect this is the case with Xcode 4.2) the build will fail.

Quite possibly it should be the default.

Thus it will be correct after the setting is changed.

Refs Homebrew/homebrew#7236, though honestly I just think @dsarch hasn't updated.

Fixes Homebrew/homebrew#7392.

Look in /usr/bin because all versions of Xcode install it to /usr/bin now and this allows us to support Xcode-less installs of Apple's developer tools.

I inadvertently gzipped it last night. That in itself doesn't cause any
tests to fail because the download strategy code is robust, but it's
fixed here anyway to be consistent. Basically, I'm dumb.

I also took the opportunity to remove the other resource fork file, so
the tarball is clean.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Fixes Homebrew/homebrew#7383.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Closes Homebrew/homebrew#7373.

Signed-off-by: Max Howell <max@methylblue.com>

I added some comments.