mailutils: disable parallel building

[xeji]

Motivation for this change

mailutils has had some sporadic, not locally reproducible Hydra build failures like this. Looking at the log, the errors are likely caused by a parallel build with missing internal dependencies.

/cc ZHF #36453

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option build-use-sandbox in nix.conf on non-NixOS)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Fits CONTRIBUTING.md.

---

[GrahamcOfBorg]

Success on x86_64-linux (full log)

Attempted: mailutils

Partial log (click to expand)

shrinking /nix/store/c5c6wvynzbhrsq4qb7vsrfm9vjkg514y-mailutils-3.2/sbin/maidag
shrinking /nix/store/c5c6wvynzbhrsq4qb7vsrfm9vjkg514y-mailutils-3.2/sbin/comsatd
gzipping man pages under /nix/store/c5c6wvynzbhrsq4qb7vsrfm9vjkg514y-mailutils-3.2/share/man/
strip is /nix/store/fzcs0fn6bb04m82frhlb78nc03ny3w55-binutils-2.28.1/bin/strip
stripping (with command strip and flags -S) in /nix/store/c5c6wvynzbhrsq4qb7vsrfm9vjkg514y-mailutils-3.2/lib  /nix/store/c5c6wvynzbhrsq4qb7vsrfm9vjkg514y-mailutils-3.2/bin  /nix/store/c5c6wvynzbhrsq4qb7vsrfm9vjkg514y-mailutils-3.2/sbin
patching script interpreter paths in /nix/store/c5c6wvynzbhrsq4qb7vsrfm9vjkg514y-mailutils-3.2
/nix/store/c5c6wvynzbhrsq4qb7vsrfm9vjkg514y-mailutils-3.2/bin/mailutils-config: interpreter directive changed from " /bin/sh" to "/nix/store/q1g0rl8zfmz7r371fp5p42p4acmv297d-bash-4.4-p19/bin/sh"
/nix/store/c5c6wvynzbhrsq4qb7vsrfm9vjkg514y-mailutils-3.2/bin/guimb: interpreter directive changed from " /bin/sh" to "/nix/store/q1g0rl8zfmz7r371fp5p42p4acmv297d-bash-4.4-p19/bin/sh"
checking for references to /build in /nix/store/c5c6wvynzbhrsq4qb7vsrfm9vjkg514y-mailutils-3.2...
moving /nix/store/c5c6wvynzbhrsq4qb7vsrfm9vjkg514y-mailutils-3.2/sbin/* to /nix/store/c5c6wvynzbhrsq4qb7vsrfm9vjkg514y-mailutils-3.2/bin

[GrahamcOfBorg]

Success on aarch64-linux (full log)

Attempted: mailutils

Partial log (click to expand)

shrinking /nix/store/cyaiz58imyhshcw8b8snkz38aab813kl-mailutils-3.2/lib/libmailutils.so.5.0.2
gzipping man pages under /nix/store/cyaiz58imyhshcw8b8snkz38aab813kl-mailutils-3.2/share/man/
strip is /nix/store/3zq400fri5dv7d30lpxlqm2v9y1iis6j-binutils-2.28.1/bin/strip
stripping (with command strip and flags -S) in /nix/store/cyaiz58imyhshcw8b8snkz38aab813kl-mailutils-3.2/lib  /nix/store/cyaiz58imyhshcw8b8snkz38aab813kl-mailutils-3.2/bin  /nix/store/cyaiz58imyhshcw8b8snkz38aab813kl-mailutils-3.2/sbin
patching script interpreter paths in /nix/store/cyaiz58imyhshcw8b8snkz38aab813kl-mailutils-3.2
/nix/store/cyaiz58imyhshcw8b8snkz38aab813kl-mailutils-3.2/bin/guimb: interpreter directive changed from " /bin/sh" to "/nix/store/3gg2p6n4kv2f0lsxd41f5iz1ivkbzyzr-bash-4.4-p19/bin/sh"
/nix/store/cyaiz58imyhshcw8b8snkz38aab813kl-mailutils-3.2/bin/mailutils-config: interpreter directive changed from " /bin/sh" to "/nix/store/3gg2p6n4kv2f0lsxd41f5iz1ivkbzyzr-bash-4.4-p19/bin/sh"
checking for references to /build in /nix/store/cyaiz58imyhshcw8b8snkz38aab813kl-mailutils-3.2...
moving /nix/store/cyaiz58imyhshcw8b8snkz38aab813kl-mailutils-3.2/sbin/* to /nix/store/cyaiz58imyhshcw8b8snkz38aab813kl-mailutils-3.2/bin
/nix/store/cyaiz58imyhshcw8b8snkz38aab813kl-mailutils-3.2