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Exotic Nix Targets

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9 Jul 2023
@alex:tunstall.xyzAlex
In reply to @thefossguy:matrix.org
by upstream, do you mean StarFive's repo or Linus' tree? I belive Linus' tree is missing support for the eMMC node for the VF2 dtsi (haven't checked for -next).
Vendor's, sorry I was unclear (I'd call Linus' mainline). 		11:15:32
@alex:tunstall.xyzAlexFWIW I tried mainline too but it didn't boot and I don't have the hardware to debug failed boots.11:16:26
@thefossguy:matrix.orgPratham PatelAh okay... I tried their 6.4-rc3 with my old arch image a few months ago... It would boot but the GPU drivers are tied to the vendor 5.15.0 kernel for now :(11:17:08
@thefossguy:matrix.orgPratham Patel
In reply to @alex:tunstall.xyz
FWIW I tried mainline too but it didn't boot and I don't have the hardware to debug failed boots.
Yeah, the mainline kernel doesn't know where the SD card is. I checked it via UART and it panicked at a recovery shell with a missing rootfs. Dug deeper to find out that the upstream DTB doesn't yet have an "entry" for the eMMC node. 		11:18:21
@thefossguy:matrix.orgPratham PatelVendor kernel has this node: https://github.com/starfive-tech/linux/blob/b4920a1a3dd328124c61b07e8a6ab48c67881037/arch/riscv/boot/dts/starfive/jh7110-visionfive-v2.dtsi#L2311:21:02
@thefossguy:matrix.orgPratham PatelMeanwhile upstream doesn't yet have it: https://github.com/torvalds/linux/blob/e2c510d6d630fe6593a0cf87531913b4b08ebeb1/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi#L1811:21:33
@alex:tunstall.xyzAlex

For microSD, mmc1 is the correct node btw. I don't think mmc0 is used in the VF2, but it seems like it's for eMMC.

[nixos@nixos:/etc/nixos]$ lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
mmcblk1     179:0    0 232.2G  0 disk 
├─mmcblk1p1 179:1    0   256M  0 part /boot
└─mmcblk1p2 179:2    0 231.9G  0 part /nix/store
                                      /
11:22:27
@thefossguy:matrix.orgPratham PatelYes, but both are missing from upstream ;)11:23:22
@alex:tunstall.xyzAlexOh dear, no ethernet in mainline either11:23:29
@thefossguy:matrix.orgPratham Patel:')11:23:47
10 Jul 2023
@trofi:matrix.orgtrofi

artemis: RE your past problems with libtool cross-compiling on Gentoo. I think I found the issue: if you run nix itself in a containerized environment nix silently falls back into the mode without a sandbox enabled (due to a sandbox-fallback = true) and happily runs unsandboxed builds in /tmp. ALl the bianries in /usr/bin and whatnot are available to the builds and this impurity contaminates the environemtn with /usr/lib library search paths breaks the builds.

The easy way to check it is to set sandbox-fallback = false in /etc/nix/nix.conf, restart nix-daemon and try to build something. If it fails that means you have been using unsandboxed builds.

08:32:39
@trofi:matrix.orgtrofi I disabled sandbox fallback in the overlay with https://github.com/trofi/nix-guix-gentoo/commit/88050fcf0f3a11a7a6763494eda580b707be1267 and added a README entry to diagnose it: https://github.com/trofi/nix-guix-gentoo/commit/8109131192dc340e314d9e41159b176bfb5b82c8 08:33:40
@trofi:matrix.orgtrofi What environment did you use to run nix? Real machine, a VM or some container? 08:34:20
@artemis:arty.chatartemis
In reply to @trofi:matrix.org
What environment did you use to run nix? Real machine, a VM or some container?
real machine, no VMs, no containers 		08:56:22
@artemis:arty.chatartemisalso my /etc/nix/nix.conf already has `sandbox-fallback = false`08:58:48
@artemis:arty.chatartemis* also my /etc/nix/nix.conf already has `sandbox-fallback = false` without issue08:59:01
@artemis:arty.chatartemis* also my /etc/nix/nix.conf already has `sandbox-fallback = false` without issue. i dont know when i added that but it's been there08:59:53
@achnazoor:matrix.org@achnazoor:matrix.org joined the room.09:05:21

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