arianvp

Asynchronous post-build-hook

this hook queues up store paths on a unix domain socket and then spawns a service to actually push the store path to the cache through socket activation

works on MacOS and Linux

arianvp

#!/bin/sh
cat "$(nix-build ci -A eval.full --max-jobs 4  --cores 2 --arg chunkSize 10000)"/outpaths.json  | jq -r '.[]|values[]|values' | sort | uniq | cut -c 12-43 | xargs -P128 -I {} curl --head https://nixos.tvix.store/{}.narinfo

arianvp

let imds =  ["169.254.169.254" "fd00:ec2::254"]; in
{
  systemd.slices."-".sliceConfig.IPAddressDeny = imds;
  systemd.services.my-service-that-needs-aws.serviceConfig.IPAddressAllow = imds;
}

arianvp

resource "aws_s3_bucket_item" "this" {
  bucket = "images"
  key    = var.image_name
  source = var.image_path
}

resource "aws_ebs_snapshort_import" "this" {
    disk_container {
        type = "VHD"
        user_bucket = aws_s3_bucket_item.this.bucket

arianvp

{-# LANGUAGE BlockArguments #-}
{-# LANGUAGE OverloadedStrings #-}

module MyLib (someFunc) where

import Conduit (ConduitT, Flush (Chunk, Flush), Source, yield, (.|))
import Control.Concurrent (threadDelay)
import Control.Monad (forM_)
import Control.Monad.IO.Class
import Control.Monad.Trans.Class (lift)

arianvp

longComputation = do
  threaDelay 5000
  pure ["a", "b" ,"c"]

longComputation2 = do
  threadDelay 3000
  pure "lol"

website = do
  h1 "Hello, World!"

arianvp

Rosetta AOT Caching on Linux

The docs on https://developer.apple.com/documentation/virtualization/running_intel_binaries_in_linux_vms_with_rosetta#4239539 are sparse and incomplete and don't tell you at all how to set this up. Lets trial and error our way through this.

Normal Rosetta

arianvp

#!/bin/sh

#If already set (e.g. in github actions); use that instead
if [ -z "$GITHUB_TOKEN" ]; then
  nix run nixpkgs#gh auth status || nix run nixpkgs#gh auth login
  GITHUB_TOKEN="$(nix run nixpkgs#gh auth token)"
  export GITHUB_TOKEN
fi

NIX_CONFIG="access-tokens = github.com=$GITHUB_TOKEN"

arianvp

use flake .#dira

arianvp

[root@nixos:~]# poweroff

[root@nixos:~]#          Stopping Session 1 of User root...

         Stopping Session 2 of User root...
[  OK  ] Removed slice Slice /system/modprobe.
[  OK  ] Stopped target Multi-User System.
[  OK  ] Stopped target Login Prompts.
[  OK  ] Stopped target Containers.
[  OK  ] Stopped target Network is Online.