Using an error pipe.
The use of ENV[HOMEBREW_ERROR_PIPE] feels wrong, but I wasn't sure how else to
proxy the file descriptor to the child process since the fork immediately
calls exec.
Ruby throws if CWD doesn't exist, even when you aren't doing anything related to the CWD. Sucks. So at least show the user a friendly error message rather than looking broken.
Since plenty of formula don't require it, I don't want to insist on gcc being installed. A better check is if gcc is required then check for version 4.2, which is all we support.
However I can't easily do that. So I'm risking bug reports from people who didn't read the installation instructions and didn't install the right Xcode. But they deserver derision :P
The classes better reflect their contents. I'm sure this change may be
contentious, but I am a sucker for trying to create source bases that are easy
to get to grips with and easy to navigate.
brewkit.rb is now a deprecated file.
This works better as it comes after any keg-only deps change ENV, but also it needs to happen after brewkit is required and that only happens in install now.
brewkit.rb changes ENV destructively, so lets not do that everytime a formula
is required. Now it's possible for other tools to require a formula
description without worrying about side-effects.
Follow symlinks when trying to find HOMEBREW_RUBYLIB.
Signed-off-by: Max Howell <max@methylblue.com>
This is now supported usage, it wasn't before. I amended the patch quite heavily because it broke our other supported usage, ie. complete symlinking of Homebrew into /usr/local
Determine all directories that aren't Homebrew ones.
Exec find.
I prefer to keep short stuff in bin/brew so people reading the code have a better idea of what happens, and what sort of functions are useful for the sorts of things we do with Homebrew.
Axel tries to accelerate downloads by using multiple connections (possibly to
multiple servers) for one download. Because of its size, it might be very
useful on bootdisks or other small systems as a wget replacement.
I'm trying to only show the interesting stuff. You can see a full listing with
brew -v list, or by piping to other commands.
Tell me if you hate it or love it.
Otherwise you run the risk of not running the exact version / make of the utility you planned.
FixesHomebrew/homebrew#48
Really we need to do this formula too, so I guess a make and cmake function are on the way…
Ohai is for titles, to separate sections of output so it is more readable, it
truncates long lines for this purpose. So don't use it if the line you are
outputting is likely to be long and important. Instead prefix that line with
a summary header.
Is it a DSL? No. But people call it that apparently.
To add a dependency:
class Doe <Formula
depends_on 'ray'
depends_on 'mee' => :optional
depends_on 'far' => :recommended
depends_on Sew.new
end
Sew would be a formula you have defined in this Formula file. This is useful,
eg. see Python's formula. Formula specified in this fashion cannot be linked
into the HOMEBREW_PREFIX, they are considered private libraries. This allows
you to create custom installations that are very specific to your formula.
More features to come, like specifying versions
I didn't change the class name, it's clear from the context where it is used what it does. However when just looking at files to figure out the nature of Homebrew I believe in clear naming.
Otherwise funny names earn you points.
For this to work the "running script" must be the formulae file. Making this
so wasn't so hard, there is now an install.rb script which is included with
the -r flag to the ruby executable. An at_exit handler calls the install
function.
Having the install logic in its own file made it feel like there was so much
space that I added extra error handling. So there is something to be said for
separating functionality out into its own files.
Still the error handling sucks, we'll need to marshall the exception back to
the bin/brew command. Which is another PITA.
Still overall I think this will prove worthwhile. But if it doesn't we'll
revert.
As a first usage, you can put a diff after __END__ and return DATA from
Formula::patches to make Homebrew aware of it.
Specify dependencies in your formula's deps function. You can return an Array,
String or Hash, eg:
def deps
{ :optional => 'libogg', :required => %w[flac sdl], :recommended => 'cmake' }
end
Note currently the Hash is flattened and qualifications are ignored. If you
only return an Array or String, the qualification is assumed to be :required.
Other packaging systems have problems when it comes to packages requiring a
specific version of a package, or some patches that may not work well with
other software. With Homebrew we have some options:
1. If the formula is vanilla but an older version we can cherry-pick the old
version and install it in the Cellar in parallel, but just not symlink it
into /usr/local while forcing the formula that depends on it to link to
that one and not any other versions of it.
2. If the dependency requires patches then we shouldn't install this for use
by any other tools, (I guess this needs to be decided on a per-situation
basis). It can be installed into the parent formula's prefix, and not
symlinked into /usr/local. In this case the dependency's Formula
derivation should be saved in the parent formula's file (check git or
flac for an example of this).
Both the above can be done currently with hacks, so I'll flesh out a proper
way sometime this week.
This is because I have observed two people confuse make with the "make" tool
and thus assume `brew make' is `brew install'.
`brew make' will be deprecated at 0.7, until then it shows a warning.
Pressing CTRL-C during installs would remove the prefix but not the keg directory. brew list would then report this keg as installed, even though it was empty.
Defaulting to EDITOR, then checking for the mate command, and then using
vim as a last resort.
Signed Off By: Max Howell <max@methylblue.com>
Plain brew edit still uses Textmate though because a client that
supported a project concept is required for that particular feature.
Patches for that welcome.
