| 19 Sep 2023 |
 vcunat | * firefox-bin in nixpkgs takes lots of libs including nspr and patchelfs them into RPATH. | 14:12:37 |
 K900 ⚡️ | @nbp so uh | 14:23:28 |
| K900 ⚡️ | Any idea what "relrhack" is | 14:23:34 |
| K900 ⚡️ | https://hg.mozilla.org/mozilla-central/rev/032b87ff55061bcbdc7a85d9e18fde814797073a | 14:23:35 |
| K900 ⚡️ | That's the only sus commit I've found | 14:23:51 |
 nbp | elfhack used to be a mechanism to re-order the symbol of the binary such that they appear in the order in which the CPU would read them. | 14:50:02 |
| nbp | It is possible that patchelf does not like patching binaries produced by elfhack. | 14:50:59 |
| nbp | I do not know what relrhack is. | 14:51:43 |
| K900 ⚡️ | And relrhack, seemingly, is a ... reimplementation of elfhack? Maybe? | 14:51:49 |
| nbp | * It is possible that patchelf does not like patching binaries produced by relrhack. | 14:51:52 |
| K900 ⚡️ | Or something? | 14:52:14 |
 hexa | https://glandium.org/blog/?p=4297 | 14:52:39 |
| K900 ⚡️ | Yeah I definitely suspect patchelf fuckery then | 14:54:14 |
| vcunat | Bugs in patchelf do get discovered occasionally. | 15:08:39 |
| nbp | well, is this patchelf or relrhack? | 15:52:42 |
| K900 ⚡️ | patchelf is the thing we use | 16:15:29 |
| K900 ⚡️ | relrhack is the thing you (now?) use | 16:15:36 |
| nbp | patchelf, is the thing Nixpkgs uses to make binary lookup their dependencies with a custom RPATH. relrhack is something Mozilla recently added. | 16:16:44 |
| vcunat | I suspect it will be more like which side is easier to fix than which side has larger blame. | 16:16:52 |
| nbp | valgrind for example does not care about patchelf-ed binaries … | 16:18:02 |
| K900 ⚡️ | Ideally patchelf should produce spec compliant ELF files | 16:19:06 |
| K900 ⚡️ | And so should relrhack | 16:19:10 |
| vcunat | Sure, ideally always, but you know how it often is in real life when you call things "hack" 😉 | 16:20:15 |
| K900 ⚡️ | Well yeah | 16:20:24 |
| K900 ⚡️ | So we need to figure out what's going wrong probably | 16:20:38 |
| nbp | "ideally" (repeated 10 times, and faster, sounds like "dali") | 16:21:18 |
| nbp | Or to find the easiest path to fix the issue the fastest. | 16:21:50 |
| nbp | I do not know, but maybe increasing the size of the header could be a temporary hack in relrhack, to satisfy patchelf until patchelf can be fixed. | 16:22:26 |
| nbp | * I do not know, but maybe increasing the size of the header could be a temporary hack in relrhack, to satisfy patchelf until patchelf can be fixed. (just a guess, I haven't look the issue deeply yet) | 16:22:43 |
| nbp | is there a patchelf channel where people would know? | 16:23:34 |
