bmaxa@Branimirs-Air ~ % brew search ghc
==> Formulae
ghc ✔ ghc@8.6 ghc@8.8 ghc@9 gh ghq ghi ghz ghr grc gcc ✔ shc
If you meant "ghc" specifically:
It was migrated from homebrew/cask to homebrew/core.
bmaxa@Branimirs-Air ~ % ghc -v
Glasgow Haskell Compiler, Version 8.10.7, stage 2 booted by GHC version 8.10.7
*** initializing package database:
Using binary package database: /opt/homebrew/Cellar/ghc/8.10.7/lib/ghc-8.10.7/package.conf.d/package.cache
package flags []
loading package database /opt/homebrew/Cellar/ghc/8.10.7/lib/ghc-8.10.7/package.conf.d
wired-in package ghc-prim mapped to ghc-prim-0.6.1
wired-in package integer-wired-in mapped to integer-gmp-1.0.3.0
wired-in package base mapped to base-4.14.3.0
wired-in package rts mapped to rts
wired-in package template-haskell mapped to template-haskell-2.16.0.0
wired-in package ghc mapped to ghc-8.10.7
!!! initializing package database: finished in 10.92 milliseconds, allocated 8.308 megabytes
Greetings, Branimir.
Hi, dear Cafe!
I'm having trouble compiling an application which uses PostgreSQL on a macbook with an M1 chip.
Postgre itself seems to work fine. It is installed via `homebrew` (if I'm not mistaken this is the only way on Mac to get pg_config, which is required for `persistent-postgresql`). The error message is following:
```
persistent-postgresql> <command line>: dlopen(/Users/arthurfayzrakhmanov/.stack/snapshots/x86_64-osx/36432054bd8d13c1da6134758733286b536c65d34222dcf10ecb29bd437c8117/8.10.7/lib/x86_64-osx-ghc-8.10.7/libHSpostgresql-libpq-0.9.4.3-GrxZELytXmSAOH6lAioiw9-ghc8.10.7.dylib, 5): Symbol not found: _PQclear
persistent-postgresql> Referenced from: /Users/arthurfayzrakhmanov/.stack/snapshots/x86_64-osx/36432054bd8d13c1da6134758733286b536c65d34222dcf10ecb29bd437c8117/8.10.7/lib/x86_64-osx-ghc-8.10.7/libHSpostgresql-libpq-0.9.4.3-GrxZELytXmSAOH6lAioiw9-ghc8.10.7.dylib
persistent-postgresql> Expected in: flat namespace
persistent-postgresql> in /Users/arthurfayzrakhmanov/.stack/snapshots/x86_64-osx/36432054bd8d13c1da6134758733286b536c65d34222dcf10ecb29bd437c8117/8.10.7/lib/x86_64-osx-ghc-8.10.7/libHSpostgresql-libpq-0.9.4.3-GrxZELytXmSAOH6lAioiw9-ghc8.10.7.dylib
```
The minimal setup to reproduce is following:
```
dependencies:
- base >= 4.7 && < 5
- persistent >= 2.13.1.2 && < 3
- persistent-postgresql >= 2.13.1.0 && < 3
```
Digging around gave me just a few clues. It seems that `libpq` I have is compiled some other way it expected, and missing some symbols required `persistent-postgresql` to work. I believe this is not a bug, rather that a local configuration issue.
Does anyone know which is right setup to build persistent-postgresql on Macs with M1 chip? Thanks in advance.
Sincerely.
Arthur.
P.S. Please apologize if this is not a right place to ask such questions. Asked already in Yesod Google Groups and Stack Overflow. But didn't received any feedback.
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