| 21 Oct 2024 |
 Alyssa Ross | Not the rest of binutils? | 15:01:57 |
 Tethys Svensson | Possibly yes. Pwntools uses other tools like objcopy and objdump. I don't remember if those specific tools works with multiple architectures or not | 15:02:29 |
| Tethys Svensson | I think they only hacked in multi-architecture support for what they considered most important, but I'm not sure | 15:02:43 |
| Alyssa Ross | Would you mind checking which parts we actually need? This might be easier if we don't need whole binutils packages for all of these. | 15:03:11 |
| Alyssa Ross | but I will continue cleaning up binutils in the meantime in case we end up doing full binutils :) | 15:03:45 |
| Tethys Svensson | I think it might be possible to use a unified objdump and objcopy, but it would require patches to pwntools. I'll research how feasible it would be in practice | 15:04:19 |
| Alyssa Ross | Thanks! | 15:04:25 |
| Tethys Svensson | The tools pwntools requires where they try do to multi-architecture stuff are: as, cpp, ld, objcopy, objdump, readelf, strip. So we would definitely not need to compile more than those | 15:09:10 |
| Alyssa Ross | I'm already liking that gold isn't in there | 15:10:11 |
 emily | (nothing makes me feel older than thinking of gold as the shiny new linker when it's now apparently dead) | 15:11:06 |
| Tethys Svensson | Ah, the cpp only requires a target-specific version when running on windows. So that one is easy | 15:20:53 |
|  bew joined the room. | 15:24:52 |
| Tethys Svensson | So it requires:
as from the gas sub-directoryobjcopy, objdump, readelf and strip from the binutils sub-directoryld from the ld sub-directory
It appears that everything from the binutils and ld subdirectories are actually multi-arch aware. Whether they work correctly and whether pwntools can be fixed to use the multi-arch versions when available is another questions.
| 15:25:10 |
| bew | Hello o/ I'm trying to add a pkg in nixpkgs, I added the file pkgs/by-name/pi/pik/package.nix that outputs a derivation, but nix build .#pik says the attr doesn't exist, what am I missing? 🤔 | 15:26:27 |
| * Alyssa Ross In reply to @luckytethys:matrix.org
So it requires:
as from the gas sub-directoryobjcopy, objdump, readelf and strip from the binutils sub-directoryld from the ld sub-directory
It appears that everything from the binutils and ld subdirectories are actually multi-arch aware. Whether they work correctly and whether pwntools can be fixed to use the multi-arch versions when available is another questions.
nods | 15:28:07 |
| emily | multi-arch ld should work (IIRC that's what Xen wants) | 15:29:43 |
| bew | In reply to @bew:matrix.org
Hello o/ I'm trying to add a pkg in nixpkgs, I added the file pkgs/by-name/pi/pik/package.nix that outputs a derivation, but nix build .#pik says the attr doesn't exist, what am I missing? 🤔 nevermind, forgot to git add -N .... | 15:30:50 |
 nevivurn | In reply to @bew:matrix.org
Hello o/ I'm trying to add a pkg in nixpkgs, I added the file pkgs/by-name/pi/pik/package.nix that outputs a derivation, but nix build .#pik says the attr doesn't exist, what am I missing? 🤔 Did you git add the new package.nix?
Or you can do nix-build -A pik . at the git root, to avoid copying nixpkgs into your store every time. | 15:31:01 |
 夜坂雅 | In reply to @bew:matrix.org
nevermind, forgot to git add -N .... -N 🤔 | 15:31:10 |
| emily | Alyssa Ross: was the review request of Ericson2314 and lovesegfault after the approvals on the VC4 PR intentional or just GitHub stuff? | 15:31:56 |
| emily | (don't want to merge prematurely if it was intended) | 15:32:01 |
| Tethys Svensson | Alyssa Ross: If you want I can try to see if I can add support for using those multi-arch-aware versions in upstream pwntools -- but honestly the code is already pretty convoluted and I am having a bit of a hard time making heads or tails in it.
I don't know exactly what flags I would need to add to e.g. get the multi-arch-aware objcopy to work with pwntools, and whether those options also be compatible with the non-multi-arch version.
| 15:32:17 |
| bew | In reply to @shadowrz:nixos.dev
-N 🤔 it's for --intend-to-add, to add the file to be git-tracked, but do not stage anything yet | 15:32:49 |
 jh-devv 🏳️⚧️ | What is the simplest way to make an derivation that just
fetches an git repo
runs an patch script in the repo
copies all of the files to output
| 15:32:49 |
| jh-devv 🏳️⚧️ | * What is the simplest way to make an derivation that just
fetches an git repo
runs an patch script in the repo
copies all of the files to output not not including .git
| 15:33:05 |
| bew | In reply to @shadowrz:nixos.dev
-N 🤔 * it's for --intend-to-add, to add the file to be git-tracked, but do not stage anything yet ;) | 15:33:34 |
| jh-devv 🏳️⚧️ | mkDerivationNoCC but is there something even more simple | 15:33:59 |
| nevivurn | In reply to @jh-devv:matrix.org
What is the simplest way to make an derivation that just
fetches an git repo
runs an patch script in the repo
copies all of the files to output not not including .git
fetchgit removes .git by default fyi | 15:35:14 |
| jh-devv 🏳️⚧️ | In reply to @nevivurn:nevi.dev
fetchgit removes .git by default fyi how do I patch it? | 15:35:26 |
| jh-devv 🏳️⚧️ | without something like mkDerivation | 15:35:31 |
