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Wed May 24 2023

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May 24 2023 00:32 UTC

115/₅₀ words

38s read

There’s this cool python script chromexup that allows declaratively managing chromium based extensions.

Basically setup the configuration in the right place, find the extension id from the Chrome web store URL and run chromexup.

  
  
    ini
  
  
  [main]
branding           = chromium
remove_orphans     = True
parallel_downloads = 4

[extensions]
BlankNewTabPage   = jaadjnlkjnhohljficgoddcjmndjfdmi
JavaScriptToggle  = cdcgbgnfhhdmdkallfmlachogpghifgf
NoHistory         = ljamgkbcojbnmcaonjokopmcblmmpfch

Side note: NoHistory is good for disabling history (Firefox has options). If the history/bookmarks database gets too large, funky auto–suggestion stuff can happen (100% processor usage). imo, it’s best not to trust browsers storing bookmarks anyway and use an independent tool/method. The less data coupled to browsers the better — at least if you’re like me and swap browsers regularly.

#gists

Another wandering soul whispering into the void. If you are looking for my blog you are in the wrong place. The profile and header pictures are brought to you by cdd20.

tdro

Fri May 5 2023 (edited)

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May 5 2023 23:07 UTC

69/₅₀ words

23s read

Different words similar meaning? --references is NixOS speak for direct package dependencies. --requisites list all. These work with the nix-store command.

  
    shell
  
  $ readlink --canonicalize "$(type -P which)"
/nix/store/r78jv9xgxnvsm5vpasf5ldkc28pkri6r-which-2.21/bin/which

$ nix-store --query --references /nix/store/r78jv9xgxnvsm5vpasf5ldkc28pkri6r-which-2.21
/nix/store/4nlgxhb09sdr51nc9hdm8az5b08vzkgx-glibc-2.35-163

which directly depends on glibc. Swap --references to --referrers for paths pointing to which.

On Guix, list/draw dependencies with guix graph.

  
    shell
  
  guix graph --type=references which
nix-store --query --tree "$(readlink --canonicalize "$(type -P which)")"

#gists #linux

Another wandering soul whispering into the void. If you are looking for my blog you are in the wrong place. The profile and header pictures are brought to you by cdd20.

tdro

Sat Jan 21 2023

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Jan 21 2023 13:53 UTC

191/₅₀ words

64s read

A NixOS configuration for a working sound driver on an A1418 Cirrus Logic CS8409/CS42L83.

  
  
    nix
  
  
  { stdenv, lib, fetchgit, linuxKernel, kernel ? linuxKernel.kernels.linux_5_15
, version ? "d0d785dc1859b09299bde6d0f1d6786a0d610e7f" }:

stdenv.mkDerivation {

  inherit version;
  name = "sna-hda-codec-cs8409-${version}-module-${kernel.modDirVersion}";

  # Upstream: https://github.com/davidjo/snd_hda_macbookpro

  src = fetchgit {
    url = "https://github.com/egorenar/snd-hda-codec-cs8409.git";
    rev = version;
    sha256 = "sha256-0UeoERcYpM+ojeZ7dDIE3ruTIoHkkC+s7FcoEVUTR0w=";
  };

  hardeningDisable = [ "pic" ];
  nativeBuildInputs = kernel.moduleBuildDependencies;

  NIX_CFLAGS_COMPILE = [ "-g" "-Wall" "-Wno-unused-variable" "-Wno-unused-function" ];

  makeFlags = kernel.makeFlags ++ [
    "INSTALL_MOD_PATH=$(out)"
    "KERNELRELEASE=${kernel.modDirVersion}"
    "KERNEL_DIR=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
  ];

  postPatch = ''
    printf '
    snd-hda-codec-cs8409-objs := patch_cs8409.o patch_cs8409-tables.o
    obj-$(CONFIG_SND_HDA_CODEC_CS8409) += snd-hda-codec-cs8409.o

    KBUILD_EXTRA_CFLAGS = "-DAPPLE_PINSENSE_FIXUP -DAPPLE_CODECS -DCONFIG_SND_HDA_RECONFIG=1"

    KERNELRELEASE ?= $(shell uname -r)
    KERNEL_DIR    ?= /lib/modules/$(KERNELRELEASE)/build
    PWD           := $(shell pwd)

    default:
    	make -C $(KERNEL_DIR) M=$(PWD) CFLAGS_MODULE=$(KBUILD_EXTRA_CFLAGS)

    install:
    	make -C $(KERNEL_DIR) M=$(PWD) modules_install
    ' \
    > Makefile

    sed --in-place 's|<sound/cs42l42.h>|"${linuxKernel.kernels.linux_6_0.dev}/lib/modules/${linuxKernel.kernels.linux_6_0.modDirVersion}/source/include/sound/cs42l42.h"|'  patch_cs8409.h
    sed --in-place 's|hda_local.h|${kernel.dev}/lib/modules/${kernel.modDirVersion}/source/sound/pci/hda/hda_local.h|'                                                      patch_cs8409.h
    sed --in-place 's|hda_jack.h|${kernel.dev}/lib/modules/${kernel.modDirVersion}/source/sound/pci/hda/hda_jack.h|'                                                        patch_cs8409.h
    sed --in-place 's|hda_generic.h|${kernel.dev}/lib/modules/${kernel.modDirVersion}/source/sound/pci/hda/hda_generic.h|'                                                  patch_cs8409.h
    sed --in-place 's|hda_auto_parser.h|${kernel.dev}/lib/modules/${kernel.modDirVersion}/source/sound/pci/hda/hda_auto_parser.h|'                                          patch_cs8409.h
  '';

  meta = { platforms = lib.platforms.linux; };
}

Then build it as a extra/custom kernel module. The results of stumbling upon yet another troublesome device…

  
  
    nix
  
  
  { pkgs, ... }:

{
  boot = {
    extraModulePackages = [
      (pkgs.callPackage ../packages/snd-hda-cs8409/default.nix {
        kernel = pkgs.linux_5_15;
      })
    ];
  };
}

#gists #linux

Another wandering soul whispering into the void. If you are looking for my blog you are in the wrong place. The profile and header pictures are brought to you by cdd20.

tdro

Fri Jan 6 2023 (edited)

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Jan 6 2023 03:23 UTC

145/₅₀ words

48s read

My default nix configuration on NixOS.

This configuration is more for building/debugging stuff and caching with nix-serve. Usually my package version is locked since different versions of nix can have some effects.

  
  
    nix
  
  
  { config, ... }:

{
  nix = {
    package = (import ../versions.nix).nix_2_17 { inherit config; };
    settings = {
      log-lines = 25;                                # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-log-lines
      fallback = true;                               # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-fallback
      tarball-ttl = 0;                               # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-tarball-ttl
      show-trace = true;                             # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-show-trace
      connect-timeout = 5;                           # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-connect-timeout
      auto-optimise-store = true;                    # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-auto-optimise-store
      narinfo-cache-negative-ttl = 0;                # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-narinfo-cache-negative-ttl
      narinfo-cache-positive-ttl = 0;                # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-narinfo-cache-positive-ttl
      builders-use-substitutes = true;               # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-builders-use-substitutes
      min-free = 268435456;                          # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-min-free (256 MB in Bytes)
      max-free = 1073741824;                         # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-max-free (1 GB in Bytes)
      allowed-users = [ "root" "@wheel" ];           # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-allowed-users
      trusted-users = [ "root" "@wheel" ];           # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-trusted-users
      experimental-features = "nix-command flakes";  # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-experimental-features
    };
  };
}

#gists #linux

Another wandering soul whispering into the void. If you are looking for my blog you are in the wrong place. The profile and header pictures are brought to you by cdd20.

tdro

Wed Dec 14 2022

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Dec 14 2022 01:58 UTC

68/₅₀ words

23s read

It’s kinda neat how CSS animation rules are sort of simple in their construction. imo, rules could be made even simpler if the animation-delay property also allowed delays between iterations/intervals instead of at the start only. Interval delays could allow for writing drastically less key frame rules.

  
    css
  
  text-animation[hang] {
  animation: tilt-rightward 1.3s infinite, tilt-leftward 1.8s infinite;
}

#gists #webdev

Another wandering soul whispering into the void. If you are looking for my blog you are in the wrong place. The profile and header pictures are brought to you by cdd20.

tdro

Wed Sep 28 2022 (edited)

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Sep 28 2022 02:36 UTC

72/₅₀ words

24s read

Chrome --headless can dump the dom to the command line. Set a virtual time budget in vms [?] for the js to settle down and then do stuff.

  
  
    shell
  
  
  Html() {
  chromium \
    --headless \
    --incognito \
    --dump-dom \
    --virtual-time-budget=999999 \
    "$1"
}

HtmlToText() {
  lynx -stdin -dump -nolist
}

This has “peculiar” uses. Fun fact: invoking the name of chromium around normal people confers alien–like status.

  
    shell
  
  Html 'https://www.youtube.com/' | HtmlToText

#gists

Another wandering soul whispering into the void. If you are looking for my blog you are in the wrong place. The profile and header pictures are brought to you by cdd20.

tdro

Fri Sep 2 2022

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Sep 2 2022 11:13 UTC

⁴⁸/₅₀ words

16s read

WordPress has an affinity for back–doored radioactivity. If I can get my way (which is hard), a WordPress install has only 1 theme and 0 plugins.

  
    shell
  
  wordpress/
|-- public
`-- wp-config.php

  
    php
  
  /* Disable installing plugins and themes */
define('DISALLOW_FILE_MODS', true);

#gists #webdev

Another wandering soul whispering into the void. If you are looking for my blog you are in the wrong place. The profile and header pictures are brought to you by cdd20.

tdro

Fri Aug 26 2022 (edited)

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Aug 26 2022 22:20 UTC

143/₅₀ words

48s read

My puppeteer scripts now use deno.

No more need for npm in my personal stack! The native browser’s path comes from which.

  
  
    javascript
  
  
  import puppeteer from "https://deno.land/x/puppeteer@16.2.0/mod.ts";

const chrome = "chromium";  // Browser Chrome: "firefox" | "chromium" | "google-chrome" | ...
const product = "chrome";   // Product Base:   "firefox" | "chrome"

const command = new Deno.Command("which", { args: [chrome] });
const { status, stdout, stderr } = command.outputSync();
const executablePath = new TextDecoder().decode(stdout).trim();

const browser = await puppeteer.launch({
  headless: false,
  executablePath: executablePath,
  product: product,
});

const site = "example.com";
const page = await browser.newPage();

await page.setViewport({ width: 1024, height: 768 });
await page.goto("https://" + site);
await page.screenshot({ path: site + ".png" });

await page.waitForSelector('a');

const url = await page.evaluate(() => {
  return document.querySelector('a').href;
});

console.log(url);

await browser.close();

shell

deno run --allow-all main.ts

#gists #webdev

Another wandering soul whispering into the void. If you are looking for my blog you are in the wrong place. The profile and header pictures are brought to you by cdd20.

tdro

Wed Jul 6 2022

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Jul 6 2022 22:57 UTC

80/₅₀ words

27s read

Web servers can be spun up quickly on the command line but with gotchas.

Take the innocent PHP web server cli.

shell

php -S 127.0.0.1:8080

Best not to use PHP’s web server cli (even for PHP) because routes with a dot (.) are assumed to be static files. Use a real web server or superior cli web servers with minor gotchas.

  
    shell
  
  python -m http.server --bind 127.0.0.1 8080
busybox httpd -f -p 127.0.0.1:8080
ruby -run -e httpd . -p 8080

#gists #webdev

Another wandering soul whispering into the void. If you are looking for my blog you are in the wrong place. The profile and header pictures are brought to you by cdd20.

tdro

Mon Jul 4 2022

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