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# Example usage:
#
#    src = filterSourceConvenience.filter ./. {
#      srcDirs = [
#        ./src
#        ./app
#        ./images
#      ];
#      srcFiles = [
#        ./mypackage.cabal

nh2

Keybase proof

I hereby claim:

• I am nh2 on github.
• I am nh2 (https://keybase.io/nh2) on keybase.
• I have a public key ASDKBpC_rW52PREKyp33ebXJ9PYSfVhlvco2_3mZ2QiMOQo

To claim this, I am signing this object:

nh2

Originally from #ghc on freenode, 2018-12-16:

Most of the checks seem to actually be no-ops for cross-compilation. E.g. checking for working strnlen is just hardcoded to "yes" on all targets but AIX (in similar other cases, it just prints "guessing yes").

For checking size of int *, it does a binary search as you say, and NOT invoke the compiled programs. It does it by generating a static array with known size, like arr[1 - 2 * (sizeof(int*) <= BINARY_SEARCH_VAR)], so that the static size is either [1] or [-1]. C compilers happen to complain about arrays of negative static size, so that's how it figures that out. See ac_fn_c_compute_int().

To see this, I use for compilation of GNU hello, the following added to configure.ac:

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with import <nixpkgs> {};

stdenv.mkDerivation {
  name = "bluez-patched-systemd-unit";
  buildCommand = let
    in ''
      set -eo pipefail
      cp -rvs ${pkgs.bluez} --no-preserve=mode $out
      sed --in-place 's:bluetooth/bluetoothd:bluetooth/bluetoothd -P:g' $out/etc/systemd/system/bluetooth.service
  '';

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$ dmesg
[    0.000000] microcode: CPU0 microcode updated early to revision 0x1f, date = 2018-02-07
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Initializing cgroup subsys cpuacct
[    0.000000] Linux version 4.4.0-131-generic (buildd@lgw01-amd64-015) (gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.10) ) #157-Ubuntu SMP Thu Jul 12 15:51:36 UTC 2018 (Ubuntu 4.4.0-131.157-generic 4.4.134)
[    0.000000] Command line: BOOT_IMAGE=/vmlinuz-4.4.0-131-generic root=/dev/mapper/vg0-ubuntu1604 ro console=tty1 console=ttyS0,115200
[    0.000000] KERNEL supported cpus:
[    0.000000]   Intel GenuineIntel
[    0.000000]   AMD AuthenticAMD

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{-# LANGUAGE NamedFieldPuns #-}
{-# LANGUAGE OverloadedStrings #-}
{-# OPTIONS_GHC -Wall #-}

import           Control.Concurrent.Async (forConcurrently_)
import           Data.Foldable (for_)
import           Data.List (intercalate)
import qualified Data.Map as Map
import           Data.Semigroup ((<>))
import qualified Data.Text as T

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#0  0x00007f5b1ebe458f in pthread_cond_wait@@GLIBC_2.3.2 () from /nix/store/hwwqshlmazzjzj7yhrkyjydxamvvkfd3-glibc-2.26-131/lib/libpthread.so.0
#1  0x0000000001d06f69 in waitCondition ()
#2  0x0000000001cf533b in yieldCapability ()
#3  0x0000000001cf26c9 in schedule ()
#4  0x0000000001cf37ac in scheduleWorker ()
#5  0x00007f5b1ebde2a7 in start_thread () from /nix/store/hwwqshlmazzjzj7yhrkyjydxamvvkfd3-glibc-2.26-131/lib/libpthread.so.0
#6  0x00007f5b002a757f in clone () from /nix/store/hwwqshlmazzjzj7yhrkyjydxamvvkfd3-glibc-2.26-131/lib/libc.so.6

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	.file	"lz4frame.c"
	.text
.Ltext0:
	.section	.text.unlikely,"ax",@progbits
.LCOLDB0:
	.text
.LHOTB0:
	.p2align 4,,15
	.section	.text.unlikely
.Ltext_cold0:

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Using ghc-8.2.2

-g -optc-g -opta-g -optc-Wa,-g -opta-Wa,-g
passes -g to as

-g -optc-g -opta-g -optc-Wa,-g
does not pass -g to as

-g -optc-g -opta-g             -opta-Wa,-g
passes -g to as

nh2

#!/usr/bin/env python3
import argparse
import copy
import json
import sys


def migrate(input_dict):
  j = copy.deepcopy(input_dict)