Source: https://raw.githubusercontent.com/NixOS/nixpkgs/master/pkgs/development/tools/build-managers/meson/allow-dirs-outside-of-prefix.patch
--- a/mesonbuild/coredata.py
+++ b/mesonbuild/coredata.py
@@ -506,7 +506,6 @@ class CoreData:
             return value
         if option.name.endswith('dir') and value.is_absolute() and \
            option not in BULITIN_DIR_NOPREFIX_OPTIONS:
-            # Value must be a subdir of the prefix
             # commonpath will always return a path in the native format, so we
             # must use pathlib.PurePath to do the same conversion before
             # comparing.
@@ -518,7 +517,7 @@ class CoreData:
             try:
                 value = value.relative_to(prefix)
             except ValueError:
-                raise MesonException(msg.format(option, value, prefix))
+                pass
             if '..' in str(value):
                 raise MesonException(msg.format(option, value, prefix))
         return value.as_posix()
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<div class='path'>path: <a href='/guix/log/?id=2a9f817ffdf66cc4b20538eec6232bfa504dba9d'>root</a>/<a href='/guix/log/manifest.scm?id=2a9f817ffdf66cc4b20538eec6232bfa504dba9d'>manifest.scm</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/manifest.scm?id=2a9f817ffdf66cc4b20538eec6232bfa504dba9d&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2024-01-31 09:07:25 +0100'>2024-01-31</span></td><td><a href='/guix/commit/manifest.scm?id=66dd088d3c3404f5cbe2d4d4c5e8f93d184703b0'>maint: Add gnupg to the manifest.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-09-18 22:12:39 +0200'>2023-09-18</span></td><td><a href='/guix/commit/manifest.scm?id=7bf12820f61179900f9d1f753acf91fd33724976'>maint: Support `guix shell' in Guix's git archive with manifest.scm.</a><span class='msg-avail'>...</span></td><td>Janneke Nieuwenhuizen</td></tr>