Added a missing include file (necessary for gid_t and others).
So far as I am aware, this has not been added upstream yet.
--- CSSC-1.3.0/src/file.h	2010-05-16 19:31:33.000000000 +0200
+++ CSSC-1.3.0/src/file.h	2014-02-03 21:48:30.000000000 +0100
@@ -30,6 +30,7 @@
 #ifndef CSSC__FILE_H__
 #define CSSC__FILE_H__
 
+#include <sys/types.h>
 #include "filelock.h"
 
 enum create_mode {
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<tr><td><span title='2022-01-10 11:44:30 -0500'>2022-01-10</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=756188a8da7e3cf4a784dab4eab05799eb2f2dd5'>gnu: avahi: Make all arguments unconditional.</a></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2021-09-20 11:15:08 +0000'>2021-09-20</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=0636f02b0e33aed9b2f951bc91ded0fe8a7d1654'>gnu: avahi: Use the cross-compiled bash.</a></td><td>Maxime Devos</td></tr>
<tr><td><span title='2021-09-20 11:15:08 +0000'>2021-09-20</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=0515ebb0d17f4350b094cace66d5469640029da7'>gnu: avahi: Find 'TARGET-pkg-config' when cross-compiling.</a></td><td>Maxime Devos</td></tr>
<tr><td><span title='2021-05-09 23:43:32 +0200'>2021-05-09</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=cd42bad5d51d0069bceaea629f97bdc6154399da'>gnu: libcap: Update to 2.49.</a></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-10-13 23:48:15 +0200'>2020-10-13</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=9e1f5a263e4f6df4d075901c9b58a56f80c8b452'>gnu: libcap: Make 'libcap/next' the default libcap.</a></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-03-18 19:23:46 +0100'>2020-03-18</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=850093ac24f92ae805a2ee90681d1e4cb01ff8eb'>gnu: avahi: Update to 0.8.</a></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-03-18 19:23:46 +0100'>2020-03-18</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=32b089f4f4e86a32bb34c2c7983be5dbe9603784'>gnu: avahi: Do not build the static libraries.</a></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-01-21 22:39:42 +0100'>2020-01-21</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=8ed9be3faccb865204de46d2a8ed3e96e59281b6'>Merge branch 'staging' into core-updates</a></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-01-19 06:09:01 +0100'>2020-01-19</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=f460f8da68f915dee5aa3ce97e05ba38c92f3106'>gnu: Use HTTPS for avahi.org everywhere.</a></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2019-12-05 17:58:58 +0100'>2019-12-05</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=edb8aa3a28d410ef6fcb9355b57f9be26f87caed'>gnu: avahi: Incorporate grafted changes.</a></td><td>Marius Bakke</td></tr>
<tr><td><span title='2019-10-23 20:39:46 +0200'>2019-10-23</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=4163b6d855a4e655852029625762fccb077a196d'>gnu: avahi: Don't use package/inherit.</a></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2019-10-23 19:58:48 +0200'>2019-10-23</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=3f4ea9a62b5fa68d57724b2f83c35a191e33b7c8'>gnu: avahi: Fix CVE-2018-1000845 and duplicate CVE-2017-6519.</a></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2019-01-16 16:08:22 +0100'>2019-01-16</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=255d1bbe777a824be726edeb9fd47458a3a877a9'>gnu: Move dbm databases to new module.</a></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2018-05-01 16:01:39 +0200'>2018-05-01</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=6c46e8e693279f22ab6a1f88b5a05cde0b6b585b'>gnu: nss-mdns: Update to 0.14.1.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-03-18 00:02:06 +0100'>2018-03-18</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=b34ac8248205d64b4023412e61512dfefe44cb9e'>gnu: nss-mdns: Adjust Avahi socket file name.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-02-16 13:14:26 -0500'>2018-02-16</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=150062f19060687dbf8e2cbe6a22c2f8600e7c4e'>Merge branch 'master' into core-updates</a></td><td>Mark H Weaver</td></tr>
<tr><td><span title='2018-02-15 10:16:00 +0100'>2018-02-15</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=9859b5c190b43a2d53f03f1ac71bad20c74b632b'>gnu: nss-mdns: Update to 0.12.0.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-02-11 04:05:07 -0500'>2018-02-11</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=a7fb29866520d5661e0ac8e47957c91a2a43e11e'>Merge branch 'master' into core-updates</a></td><td>Mark H Weaver</td></tr>
<tr><td><span title='2018-02-09 15:17:41 +0100'>2018-02-09</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=a68fdfea96370c8a4b95af1fcd6e2fd7eb72da29'>services: avahi: Default to nss-mdns 0.10.</a></td><td>Ludovic Courtès</td></tr>