Slightly modified version of
https://gitlab.haskell.org/ghc/ghc/-/issues/19029#note_447989, required
for older, buggy glibc versions < 2.34.

diff -Naur ghc-9.2.5/compiler/GHC/Linker/Unit.hs ghc-9.2.5.patched/compiler/GHC/Linker/Unit.hs
--- ghc-9.2.5/compiler/GHC/Linker/Unit.hs	2022-11-06 20:40:29.000000000 +0100
+++ ghc-9.2.5.patched/compiler/GHC/Linker/Unit.hs	2023-01-15 14:52:57.511275338 +0100
@@ -31,11 +31,26 @@
     ps <- mayThrowUnitErr $ preloadUnitsInfo' unit_env pkgs
     return (collectLinkOpts dflags ps)
 
+fixOrderLinkOpts :: [String] -> [String]
+fixOrderLinkOpts opts
+  | have_bad_glibc_version -- glibc version strictly less than 2.34
+  , let (before, rest) = break (== libc) opts
+  , not (pthread `elem` before)
+  , pthread `elem` rest -- optional if we know pthread is definitely present
+  = before ++ pthread_and_deps ++ rest
+  | otherwise
+  = opts
+  where
+    pthread = "-lpthread"
+    libc = "-lc"
+    pthread_and_deps = [ "-lrt", pthread ] -- should depend on the environment
+    have_bad_glibc_version = True
+
 collectLinkOpts :: DynFlags -> [UnitInfo] -> ([String], [String], [String])
 collectLinkOpts dflags ps =
     (
         concatMap (map ("-l" ++) . unitHsLibs (ghcNameVersion dflags) (ways dflags)) ps,
-        concatMap (map ("-l" ++) . map ST.unpack . unitExtDepLibsSys) ps,
+        fixOrderLinkOpts $ concatMap (map ("-l" ++) . map ST.unpack . unitExtDepLibsSys) ps,
         concatMap (map ST.unpack . unitLinkerOptions) ps
     )
 
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<tr><td><span title='2024-04-29 22:52:08 +0200'>2024-04-29</span></td><td><a href='/guix/commit/gnu/system/locale.scm?id=6228a2b8bac30b502e69cfd372554103492ff96a'>locale: Shrink ‘%default-locale-definitions’ from 34 to 10 locales.</a><span class='msg-avail'>...<span class='msg-tooltip'>This reduces the default set of locales from 92 MiB to 28 MiB.

* gnu/system/locale.scm (%default-locale-definitions): Reduce to 10
locales.

Change-Id: I3c092604301d69db591957bcfd62a062c3ac5ab0
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2024-04-29 22:44:06 +0200'>2024-04-29</span></td><td><a href='/guix/commit/gnu/system/locale.scm?id=0575933ac24ad6b9a101dd762405b0cc002e9a53'>system: Remove ‘glibc-2.33’ from ‘%default-locale-libcs’.</a><span class='msg-avail'>...<span class='msg-tooltip'>The transition from glibc 2.33 to 2.35 was done in
c919bfefd98bf2e29549539b4e28e6dc2a8a6f32 (one year ago), so we can
assume that the backward-compatible locales are no longer needed by
default.

This removes 92 MiB from the system closure.

* gnu/system/locale.scm (%default-locale-libcs): Remove GLIBC-2.33.

Change-Id: I85948bbe6b2d424f9f158eeafdb5543688c66c6b
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-09-16 15:35:25 +0200'>2023-09-16</span></td><td><a href='/guix/commit/gnu/system/locale.scm?id=f2cfb4a85c82882c571274573fd7ff646d380b63'>locale: Set %default-locale-definitions to glibc/hurd on the Hurd.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/system/locale.scm (%default-locale-libcs): Use only glib/hurd when
building on the Hurd.
</span></span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2023-04-19 16:32:03 +0200'>2023-04-19</span></td><td><a href='/guix/commit/gnu/system/locale.scm?id=4f4c38c881d4224dc545c82253d2a8f631f95927'>locale: Add glibc 2.33 to '%default-locale-libcs'.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;https://issues.guix.gnu.org/62934&gt;.
Reported by Brian Cully &lt;bjc@spork.org&gt;.

* gnu/system/locale.scm (%default-locale-libcs): Add GLIBC-2.33.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-01-14 14:29:20 +0100'>2022-01-14</span></td><td><a href='/guix/commit/gnu/system/locale.scm?id=9d0d4b331d21cf555fdd6a8844d05389d934832c'>system: locale: Use only the current glibc.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/system/locale.scm (%default-locale-libcs): Remove glibc-2.31.
</span></span></td><td>Mathieu Othacehe</td></tr>