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Sat, 8 Nov 2025 17:15:00 -0500 (EST) Received: by mbp.qyliss.net (Postfix, from userid 1000) id 4ACD468FD27B; Sat, 08 Nov 2025 23:14:59 +0100 (CET) From: Alyssa Ross To: Demi Marie Obenour Subject: Re: [PATCH v6 2/2] host/rootfs: Switch to systemd-udevd In-Reply-To: <87ecq8tddi.fsf@alyssa.is> References: <20251107-udev-v6-0-176246281424@gmail.com> <20251107-udev-v6-2-176246281424@gmail.com> <87seeonw3a.fsf@alyssa.is> <87ecq8tddi.fsf@alyssa.is> Date: Sat, 08 Nov 2025 23:14:58 +0100 Message-ID: <87bjlctbml.fsf@alyssa.is> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" Message-ID-Hash: VJDMNB4PULTVGX6IXTQVMXUKU4TZNB6A X-Message-ID-Hash: VJDMNB4PULTVGX6IXTQVMXUKU4TZNB6A X-MailFrom: hi@alyssa.is X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-devel.spectrum-os.org-0; header-match-devel.spectrum-os.org-1; header-match-devel.spectrum-os.org-2; header-match-devel.spectrum-os.org-3; header-match-devel.spectrum-os.org-4; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: Spectrum OS Development X-Mailman-Version: 3.3.9 Precedence: list List-Id: Patches and low-level development discussion Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: --=-=-= Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Alyssa Ross writes: > Demi Marie Obenour writes: > >> On 11/8/25 14:49, Alyssa Ross wrote: >>> Demi Marie Obenour writes: >>>=20 >>>> @@ -113,14 +76,15 @@ let >>>>=20=20 >>>> kernel =3D linux_latest; >>>>=20=20 >>>> - appvm =3D callSpectrumPackage ../../img/app { inherit (foot) termin= fo; }; >>>> - netvm =3D callSpectrumPackage ../../vm/sys/net { inherit (foot) ter= minfo; }; >>>> + appvm =3D callSpectrumPackage ../../img/app { inherit (no_pgo_foot)= terminfo; }; >>>> + netvm =3D callSpectrumPackage ../../vm/sys/net { inherit (no_pgo_fo= ot) terminfo; }; >>>>=20=20 >>>> # Packages that should be fully linked into /usr, >>>> # (not just their bin/* files). >>>> usrPackages =3D [ >>>> - appvm kernel.modules firmware netvm >>>> - ] ++ (with pkgsGui; [ mesa dejavu_fonts westonLite ]); >>>> + appvm kernel.modules firmware kmod kmod.lib >>>> + netvm mesa dejavu_fonts westonLite >>>> + ]; >>>>=20=20 >>>> appvms =3D { >>>> appvm-firefox =3D callSpectrumPackage ../../vm/app/firefox.nix {}; >>>=20 >>> So based on what we'd discussed previously, I was ready to just apply >>> this and pare down the Nix changes myself since I don't have to worry >>> about rebuilds, etc., but in doing so I came across this. Do you know >>> why kmod.lib is required? Is something impurely dlopening it? Seems >>> very strange, but I did verify that it's required for Weston to start. >> >> systemd uses dlopen heavily. This allows dependencies to be optional >> at runtime. I remember strace showing that systemd-udevd dlopen's >> kmod.lib. In short, your diagnosis is correct. > > Okay, that's a packaging bug in Nixpkgs then. (See e.g. [1].) I'll see > what can be done. > > [1]: https://github.com/NixOS/nixpkgs/commit/2328731ad041735a2260698574ce= 6599591f33ad I have looked into it a bit and am now even more confused. From what I can see, loading libkmod should be done by libsystemd-shared.so, which has kmod.lib in its RUNPATH. --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEARYKAB0WIQRV/neXydHjZma5XLJbRZGEIw/wogUCaQ/A4gAKCRBbRZGEIw/w oq0aAQCpInIq36Re0IvIruUR2r8EF/lRUTbRjHjulM9kwj1UGwD/bzfeTkOArHNY Y5GzhF0sh808XEp5FvPqyX5XoKJuZw0= =p4rQ -----END PGP SIGNATURE----- --=-=-=--