Hi, I am using the obelisk framework for reflex-frp from Obsidian Systems. Running a nix-shell (to eventually run my emacs) like this …
nix-shell -A shells.ghc
results in lot of compiling of haskell packages. There is
base64 which apparently has 228 dependencies (as shown in the output log). At about 199/228 my RAM is all used up and the process gets killed.
[199 of 228] Compiling GHC.Hs.Instances ( compiler/GHC/Hs/Instances.hs, dist/build/GHC/Hs/Instances.o ) /nix/store/wgap303sj9zqz63gw7nqxvf4dqz2hgai-stdenv-linux/setup: line 1302: 253 Killed ./Setup build builder for '/nix/store/diih8n14fw7xbvjvqy8hppw0nz9q3jq7-base64-0.4.2.2.drv' failed with exit code 137 cannot build derivation '/nix/store/r2p2wmgq7gpjc1dqfaz08g1kfjfxp3a5-ghc-8.6.5-with-packages.drv': 1 dependencies couldn't be built error: build of '/nix/store/2390dypknbv03039w9c2xqj2n53dr9bx-build-tools-wrapper.drv', '/nix/store/r2p2wmgq7gpjc1dqfaz08g1kfjfxp3a5-ghc-8.6.5-with-packages.drv' failed
At that point, there are two ghc processes and a nix-shell process. One of the ghc processes uses 63% of my RAM amounting to 10 GB of 16 GB installed in total.
Why does this happen?
I guess there are certain steps to go about this.
- Activate swap partition to have more memory, effectively. But 16 GB should make swap redundant (so I was told)
- Maybe reduce the number of build processes (how?)
The fact that the whole process consistently fails building the base64 packages makes me suspicious, too. Is there a problem related to garbage collection?
EDIT: I realize, this might have more to do with GHC compiling and linking than with Nix. I am not a 100% sure, though.
nix-info -m - system: `"x86_64-linux"` - host os: `Linux 5.10.118, NixOS, 21.11 (Porcupine)` - multi-user?: `yes` - sandbox: `yes` - version: `nix-env (Nix) 2.3.16` - channels(root): `"nixos-21.11"` - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos`