From: Jeffrey Chan <lists@...>
Date: 2012-09-08T02:14:42+09:00
Subject: Re: How to patch ruby's gem before an install ?

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Why not just clone/fork it from GitHub, apply your patch and commit it,
then use bundler to install the gem using the :git => syntax?

   gem 'gosu', :git => 'git://github.com/yourname/gosu.git' , or
   gem 'gosu', :git => '/myproject/src/gosu.git'  (if it's on your hard
drive)

I'm a bit for a Ruby noob but have modified gems this way myself several
times, very easy. Gosu has native code in C++ so not sure if that affects
it. If the above syntax fails, you can try running the Rakefile included in
the source to build the gem package locally.

- Jeff


On Sat, Sep 8, 2012 at 12:25 AM, David Unric <lists@ruby-forum.com> wrote:

> Hi,
>
> got stuck and cann't find appropriate guide how can I patch gem package
> before it gets installed.
>
> For example I'm trying to fix gem for Gosu library:
>
> 1. download the gem with "gem fetch gosu"
> 2. extract contents of the gem with "gem unpack gosu-0.7.45.gem"
> 3. apply a patch: cd gosu-0.7.45 && patch -p1
> /path/to/patch/fix_cflags.patch
> 4. ??? how to rebuild a gem from modified sources ? I cann't find the
> original gemspec.
> 5. ??? install modified gem with gem install ./gosu-0.7.45.gem
>
> Any idea ?
>
> Thx, David
>
> --
> Posted via http://www.ruby-forum.com/.
>
>

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Why not just clone/fork it from GitHub, apply your patch and commit it, the=
n use bundler to install the gem using the :git =3D&gt; syntax?<div><br><di=
v><div>=C2=A0 =C2=A0gem &#39;gosu&#39;, :git =3D&gt; &#39;git://<a href=3D"=
http://github.com/yourname/gosu.git">github.com/yourname/gosu.git</a>&#39; =
, or</div>

<div>=C2=A0 =C2=A0gem &#39;gosu&#39;, :git =3D&gt; &#39;/myproject/src/gosu=
.git&#39; =C2=A0(if it&#39;s on your hard drive)<br><br></div><div>I&#39;m =
a bit for a Ruby noob but have modified gems this way myself several times,=
 very easy. Gosu has native code in C++ so not sure if that affects it. If =
the above syntax fails, you can try running the Rakefile included in the so=
urce to build the gem package locally.</div>

<div><br></div>- Jeff</div><div><br></div><div><br><div class=3D"gmail_quot=
e">On Sat, Sep 8, 2012 at 12:25 AM, David Unric <span dir=3D"ltr">&lt;<a hr=
ef=3D"mailto:lists@ruby-forum.com" target=3D"_blank">lists@ruby-forum.com</=
a>&gt;</span> wrote:<br>

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">Hi,<br>
<br>
got stuck and cann&#39;t find appropriate guide how can I patch gem package=
<br>
before it gets installed.<br>
<br>
For example I&#39;m trying to fix gem for Gosu library:<br>
<br>
1. download the gem with &quot;gem fetch gosu&quot;<br>
2. extract contents of the gem with &quot;gem unpack gosu-0.7.45.gem&quot;<=
br>
3. apply a patch: cd gosu-0.7.45 &amp;&amp; patch -p1<br>
/path/to/patch/fix_cflags.patch<br>
4. ??? how to rebuild a gem from modified sources ? I cann&#39;t find the<b=
r>
original gemspec.<br>
5. ??? install modified gem with gem install ./gosu-0.7.45.gem<br>
<br>
Any idea ?<br>
<br>
Thx, David<br>
<span class=3D"HOEnZb"><font color=3D"#888888"><br>
--<br>
Posted via <a href=3D"http://www.ruby-forum.com/" target=3D"_blank">http://=
www.ruby-forum.com/</a>.<br>
<br>
</font></span></blockquote></div><br></div></div>

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