| 28 May 2025 |
 陈浩南 | No. I will do it another day. Thank you for your answer. | 11:53:57 |
| 陈浩南 | * No. I will strace it another day. Thank you for your answer. | 11:54:14 |
 Tristan Ross | In reply to @chn:chn.moe
This is my nix repl history:
nix-repl> :lf github:NixOS/nixpkgs/nixos-unstable
Added 17 variables.
nix-repl> outputs.legacyPackages.x86_64-linux.gcc.cc
«derivation /nix/store/sjzbql9ja7p7c08ziagba11cnvj6lsz9-gcc-14.2.1.20250322.drv»
nix-repl> outputs.legacyPackages.x86_64-linux.gcc14.cc
«derivation /nix/store/f3gx5c6q45nsskjyx451amqmzyvasr90-gcc-14.2.1.20250322.drv»
stdenv.cc is built via the last bootstrap stage. gcc is built with stdenv.cc so that's why it's different. | 14:03:21 |
| Tristan Ross | In reply to @chn:chn.moe
Currently Intel fortran compiler ifx works when compiling hdf5 and openmpi, but does not work when compiling VASP (a proprietary software, its source code is only available after purchase, so I could not provide it here).
ifx complains:
ifx: error #10417: Problem setting up the Intel(R) Compiler compilation environment. Requires 'install path' setting gathered from 'gcc'
What about using gfortran? | 14:07:41 |
| 29 May 2025 |
| 陈浩南 | Many fortran programs in my major does not consist with standard fortran, gfortran will refuse to compile them, while restriction in ifx loose a lot.
And, not sure why, but program compiled using ifx usually gains a huge performance improvement, comparing to gfortran or compiler from AMD (ROCM), even on AMD CPU. | 03:27:24 |
| Tristan Ross | In reply to @chn:chn.moe
Many fortran programs in my major does not consist with standard fortran, gfortran will refuse to compile them, while restriction in ifx loose a lot.
And, not sure why, but program compiled using ifx usually gains a huge performance improvement, comparing to gfortran or compiler from AMD (ROCM), even on AMD CPU. Oh, that's the only fortran I am aware of being in nixpkgs. We might have flang but I can't recall. What about packaging ifx? | 04:04:28 |
| 陈浩南 |
What about packaging ifx?
That is what I tried to do yesterday.
| 04:06:20 |
| 陈浩南 | *
What about packaging ifx?
That is what I tried to do yesterday.
| 04:06:29 |
| Tristan Ross | Ah | 04:07:52 |
 Randy Eckenrode | The Linux stdenv bootstrap doesn’t overlay the versioned gcc attribute. That’s all it is. The Darwin is able to do this for LLVM, so it’s probably possible for Linux, but there’s been no motivating issue to do it for Linux. | 11:53:49 |
| Randy Eckenrode | Something like this would probably work for GCC on Linux (but significantly less verbose): https://github.com/NixOS/nixpkgs/blob/adfe0268d8b621c68f0b060fc2e801b5196b5f6a/pkgs/stdenv/darwin/default.nix#L1223-L1246 | 11:55:23 |
|  matrixrooms.info mod bot (does NOT read/send messages and/or invites; used for checking reported rooms) joined the room. | 17:28:05 |
| 31 May 2025 |
|  trofi left the room. | 13:47:07 |
 Grimmauld (any/all) | Wait why can't i invite people here? | 16:33:40 |
 hexa | because permission levels are per room | 16:53:35 |
| hexa | * because permission levels are a per room setting | 16:53:40 |
| Grimmauld (any/all) | Well then. Can someone invite @benjaminsparks:chat.alugha.app ? | 18:33:30 |
| 1 Jun 2025 |
|  NixOS Moderation Botchanged room power levels. | 03:03:22 |
 uep | Redacted or Malformed Event | 03:04:10 |
| uep | Redacted or Malformed Event | 03:04:16 |
| uep invited  Ben Sparks. | 03:05:01 |
| uep | I have, but at least from where I sit, the room is public and shouldn't need an invitation | 03:25:20 |
| uepchanged room power levels. | 03:25:46 |
| Ben Sparks joined the room. | 09:06:43 |
|  Sean Thawe joined the room. | 23:48:46 |
| 5 Jun 2025 |
 John Ericson | https://github.com/NixOS/nixpkgs/pull/414321 Tristan Ross wanna review? | 19:50:58 |
| Tristan Ross | Why is it still called libcCross? Shouldn't we move that to just libc and have it apply even when not cross? | 19:52:44 |
| John Ericson | done! | 20:46:52 |
| John Ericson | thanks for encouraging the scope creep :) | 20:47:01 |
| John Ericson | fixing it was easier than I thought! | 20:47:07 |
