| 15 Sep 2025 |
 emily | conceptually, yes. in practice language features that cordycept the compiler introduce a huge swathe of complexity and compromises unless you design everything around them from the start. because suddenly you have a bunch of exposed and very load-bearing phase distinctions | 13:18:45 |
| emily | like how TH makes order of declarations stuff weird as a trivial but gross example | 13:19:09 |
 MangoIV | how many GHC.Evil things does GHC use? | 13:19:52 |
 teo (they/he) | idk Generics have been a headache on both of the industrial Haskell codebases I've worked on. Once you have records with more than say 16 fields, it gets pretty bad | 13:19:55 |
| emily | also, Haskell is already two full-blown languages at the value and type level (and you can argue there's two or three more in the latter), another layer is just painful :P | 13:20:06 |
| emily | no idea. but I wouldn't be surprised | 13:20:23 |
| MangoIV | because of compilation speed, right? | 13:20:28 |
| teo (they/he) | yeah compilation speed | 13:20:39 |
| MangoIV | also my comment was about GHC itself compiling slowly | 13:20:44 |
| emily | especially since you often really want to for perf | 13:20:48 |
| emily | or at least did back in my day | 13:20:52 |
| emily | have I mentioned I'm old lately | 13:21:06 |
| MangoIV | like, sure it would if you have checks duplicated all over, things running several times with the same inputs | 13:21:06 |
| MangoIV | and everything being IO | 13:21:10 |
 sterni | we can just replace the generics / TH instance deriving with a few small m4 scripts problem solved :3 | 13:21:35 |
| teo (they/he) | So once DH is done there's space for TH haha! | 13:21:50 |
| emily | for GHC this unironically seems perfectly adequate. (is the joke that it used to be this) | 13:22:27 |
| teo (they/he) | I am genuinely tempted to pitch this for the alternative way to fix the issue with typeclass instances in GHC | 13:22:35 |
| emily | like have a damn Python script doing code generation for all I care | 13:22:54 |
| emily | if it's just for GHC bootstrap | 13:23:02 |
