| 18 Mar 2022 |
| *  qbit switches to he cross compiling room | 12:54:06 |
| 20 Mar 2022 |
|  Anderson Torres joined the room. | 20:22:47 |
| 22 Mar 2022 |
|  matthewcroughan - nix.how changed their display name from matthewcroughan - nix.zone to matthewcroughan - nix.how. | 22:56:07 |
| 24 Mar 2022 |
|  rgrinberg joined the room. | 05:27:32 |
| *  colemickens waitng for qemu release intensifies | 21:21:29 |
| colemickens | I want those more riscv cores | 21:21:37 |
| 25 Mar 2022 |
| Anderson Torres | It will be officially supported? | 00:37:41 |
 Zhaofeng Li | No, it's been there since forever. It's just that the maximum CPU limit for qemu-system-riscv(64) has been increased | 00:43:27 |
| Zhaofeng Li | Before that you had to patch QEMU to increase it: https://www.mail-archive.com/qemu-discuss@nongnu.org/msg06986.html | 00:44:24 |
| 27 Mar 2022 |
| Anderson Torres | I am interested in porting Nix to Haiku (the open source BeOS replacement).
I have asked a thing or two in their Telegram channel, and I have received some feedback:
| 18:27:14 |
| Anderson Torres |
be warned, you SHOULD know a bit about Haiku before you can start to use nix on it. Basically / on Haiku is not the same as on unixes. Nix will try to store its data in /nix folder structure, and while it is possible to create that folder, you cannot create files in it, because / is a virtual folder, not the root node of the disk.
You have to redefine the nix store to somewhere else.
Also nix uses hardlinks for some things, which is not supported on BFS.
It seems it fails at fallocate, maybe it is something else then; commenting out the code here solved the problem: https://github.com/NixOS/nix/blob/master/src/libutil/archive.cc#L331
| 18:28:34 |
| Anderson Torres | The other possible problem is that Haiku supports 32-bit operating systems. Maybe it would limit the possibility of porting a "haiku-nixpkgs" to it? | 18:29:54 |
 7c6f434c | Well, Wine on x86_64-linux is dependent on 32-bit libraries | 18:47:03 |
| 7c6f434c | So basic 32-bit stuff breaking would be a problem for a (the) Tier-1 platform | 18:47:56 |
| 7c6f434c | Does BeOS support anything like bind-mounts? Because /nix holding no files itself and just serving as a mountpoint sounds good to me | 18:49:00 |
| 7c6f434c | On the other hand, which parts of the sandbox can be approximated is a complicated question… Bind mounts + chroot (or a clear replacement) would be nice to have… | 18:50:19 |
| Anderson Torres | Maybe bind-mounting can be accomplished. Here is a message from their mailing list (completely out of context, but whatever):
https://www.freelists.org/post/haiku-development/Question-about-system-and-bootsystem,14
| 18:56:25 |
| Anderson Torres | * Maybe bind-mounting can be accomplished. Here is a message from their mailing list (completely out of context, but whatever):
https://www.freelists.org/post/haiku-development/Question-about-system-and-bootsystem,14
And chroot is a cmdline app:
https://www.haiku-os.org/docs/userguide/en/applications/list-cli-apps.html | 18:57:47 |
| 7c6f434c | Sounds good… | 19:00:06 |
| 7c6f434c | (but significant work adapting to the BeOS APIs, of course) | 19:00:33 |
| Anderson Torres | Well, there are some messages on their board about POSIX support on Haiku (basically they say: yes, Haiku is POSIX-compliant):
https://discuss.haiku-os.org/t/is-haiku-a-unix-like-os/8801/3
| 19:09:45 |
| Anderson Torres | If the POSIX API can be used, maybe the BeOS will not be a huge problem... | 19:12:34 |
| 28 Mar 2022 |
| Anderson Torres | * If the POSIX API can be used, maybe the BeOS API will not be a huge problem... | 12:27:01 |
 alyaeanyx | How do you get the avr-gcc cross-compiling chain for AVR microcontrollers in Nixpkgs? I've tried crossSystem = { config = "avr-unknown-unknown"; }; and some variations of that | 23:32:38 |
| 29 Mar 2022 |
| matthewcroughan - nix.how | In reply to @colemickens:matrix.org
I want those more riscv cores How come? | 21:04:43 |
| matthewcroughan - nix.how | Can you do something meaningful with an increased core count? | 21:04:58 |
| matthewcroughan - nix.how | Let's say I have a really powerful x86 processor, that has 4 cores 8 threads. Can I be more effective by making a risv64 QEMU VM with more than 4 cores? | 21:05:34 |
| matthewcroughan - nix.how | Can I lie and get more performance out of the VM, and make more use of the host processor? | 21:05:45 |
| Zhaofeng Li | You don't, it's mostly for when you have a 5950X with 32 threads for example | 22:07:25 |
| 30 Mar 2022 |
|  a-kenji joined the room. | 09:59:08 |
