Add an environment variable to python-sip that extends its search
directories for .sip files.

It seems that we cannot easily change the destination folder of these
files though, so this variable must be set on a per-package basis (and
non through search-path).

--- sip/sipbuild/builder.py	2023-03-22 09:06:37.588792878 +0100
+++ sip/sipbuild/builder.py	2023-03-22 09:10:35.830181134 +0100
@@ -254,6 +254,10 @@
                     os.path.join(project.target_dir,
                             project.get_bindings_dir()))
 
+            # Add extra bindings from environment for GNU Guix.
+            if 'SIP_INCLUDE_DIRS' in os.environ:
+                sip_include_dirs.extend(os.environ['SIP_INCLUDE_DIRS'].split(os.pathsep))
+
             # Generate the sip.h file for the shared sip module.
             copy_sip_h(abi_major_version, project.build_dir,
                     project.sip_module, version_info=project.version_info)
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<div class='path'>path: <a href='/guix/log/?id=ab424da401e2a57dfb83761ea2a59bb1df3be94b'>root</a>/<a href='/guix/log/gnu?id=ab424da401e2a57dfb83761ea2a59bb1df3be94b'>gnu</a>/<a href='/guix/log/gnu/bootloader?id=ab424da401e2a57dfb83761ea2a59bb1df3be94b'>bootloader</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/bootloader?id=ab424da401e2a57dfb83761ea2a59bb1df3be94b&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2024-05-22 11:15:30 +0800'>2024-05-22</span></td><td><a href='/guix/commit/gnu/bootloader?id=c7aec90a916a99067fd9915337caf098ee8e5083'>bootloader: Add u-boot-starfive-visionfive2-bootloader.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/bootloader/u-boot.scm (u-boot-starfive-visionfive2-bootloader): New variable.

Change-Id: I4b73906fe18d481644102c271f5e0883167b3a50
</span></span></td><td>Zheng Junjie</td></tr>
<tr><td><span title='2024-03-31 22:26:21 +0200'>2024-03-31</span></td><td><a href='/guix/commit/gnu/bootloader?id=64187b65d3acb13b91dd83fc8e7209c8ef538078'>bootloader: Add u-boot-qemu-riscv64-bootloader.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/bootloader/u-boot.scm (u-boot-qemu-riscv64-bootloader): New variable.

Change-Id: If6622838d2250c90a26380849b92387aa7122fbb
Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Zheng Junjie</td></tr>
<tr><td><span title='2024-01-14 23:00:03 +0100'>2024-01-14</span></td><td><a href='/guix/commit/gnu/bootloader?id=086850e5b2b4a1744565fe83624d256524b64a49'>bootloader: grub: Add support for loading an additional initrd.</a><span class='msg-avail'>...<span class='msg-tooltip'>In order to be able to provide decryption keys for the LUKS device, they need
to be available in the initial ram disk.  However they cannot be stored inside
the usual initrd, since it is stored in the store and being a
world-readable (as files in the store are) is not a desired property for a
initrd containing decryption keys.  This commit adds an option to load
additional initrd during the boot, one that is not stored inside the store and
therefore can contain secrets.

Since only grub supports encrypted /boot, only grub is modified to use the
extra-initrd.  There is no use case for the other bootloaders.

* doc/guix.texi (Bootloader Configuration): Describe the new extra-initrd
field.
* gnu/bootloader.scm (&lt;bootloader-configuration&gt;): Add extra-initrd field.
* gnu/bootloader/grub.scm (make-grub-configuration): Use the extra-initrd
field.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
Change-Id: I995989bb623bb594ccdafbf4a1a6de941bd4189f
</span></span></td><td>Tomas Volf</td></tr>
<tr><td><span title='2023-12-22 16:06:03 -0800'>2023-12-22</span></td><td><a href='/guix/commit/gnu/bootloader?id=88fb95903c1d94b3be7e8a811d943af988041e4e'>gnu: bootloader: Add orangepi-r1-plus-lts-rk3328 bootloader.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/bootloader/u-boot.scm (install-orangepi-r1-plus-lts-rk3328-u-boot,
  u-boot-orangepi-r1-plus-lts-rk3328-bootloader): New variables.
* gnu/packages/bootloaders.scm (u-boot-orangepi-r1-plus-lts-rk3328): New
  variable.

Signed-off-by: Vagrant Cascadian &lt;vagrant@debian.org&gt;
</span></span></td><td>Herman Rimm</td></tr>
<tr><td><span title='2023-07-13 18:59:13 +0200'>2023-07-13</span></td><td><a href='/guix/commit/gnu/bootloader?id=c22c29b0c4821ebe2c66a6c76562a41d33ff8392'>bootloader: grub: Use rumpdisk-style root when booting with "noide".</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/bootloader/grub.scm (make-grub-configuration): When "noide" is in
arguments, use device name "wd0" rather than "hd0".

Signed-off-by: Josselin Poiret &lt;dev@jpoiret.xyz&gt;
</span></span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2023-06-14 14:52:21 +0300'>2023-06-14</span></td><td><a href='/guix/commit/gnu/bootloader?id=39250fc6229d60b7ae397749caf1e4c99e49b419'>gnu: bootloader: Add u-boot-sifive-unmatched-bootloader.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/bootloader/u-boot.scm (install-sifive-unmatched-u-boot,
u-boot-sifive-unmatched-bootloader): New variables.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2023-01-18 21:25:25 -0500'>2023-01-18</span></td><td><a href='/guix/commit/gnu/bootloader?id=9530ee9f9c89cbbf35589727e9fdb373ed7f47fa'>gnu: Add u-boot-ts7970-q-2g-1000mhz-c-bootloader.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/bootloader/u-boot.scm (u-boot-ts7970-q-2g-1000mhz-c-bootloader): New
variable.
</span></span></td><td>Maxim Cournoyer</td></tr>