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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.

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Appeared sometime around early May, 2022

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tdro

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 micro.thedroneely.com view
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  • 43/50 words 14s read

    Writing assistant: Vale. I heard somewhere that writing/speaking at a 6th grade level is a surefire way to be relevant… whoops.

    shell
    $ vale extensible-stylesheets.md
    1:1     suggestion  Grade Level 11.02.              thedro.Readability         
    16:3    error       Use code tag `XML` instead of   technical.CodeSubtitutions 
                       'XML'.                                                     
    Oh no
    #programs
    tdro

    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 micro.thedroneely.com (edited) view
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  • 68/50 words 23s read

    Look at this Makefile — then look at this NixOS package derivation. Appears simple but I couldn’t for the life of me divine how to quickly compile a custom/patched kernel module on NixOS. Abstractions… are very magical. The guide is cool and all, but it’s a better time investment to guesstimate the relationship between the higher/lower layer. This friendly example looks more like this in reality though ;-)

    #linux
    tdro

    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.

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  • 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; };
    }
    ../packages/snd-hda-cs8409/default.nix

    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;
          })
        ];
      };
    }
    hardware.nix
    #gists #linux
    tdro

    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 micro.thedroneely.com (edited) view
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  • 47/50 words 16s read

    Bots are ≈ 80% noise. It’s funny that in general analytics are not needed anymore. 80% noise and 20% signal. 80:20. It’s safe to turn off the computer and head outside — you’re not missing much when not on the Internet (it’s smaller than you’d think signal–wise).

    #musings
    tdro

    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 micro.thedroneely.com view
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  • 44/50 words 15s read
    tdro

    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 micro.thedroneely.com (edited) view
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  • 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
        };
      };
    }
    My nix-configuration.nix on version 23.05
    #gists #linux
    tdro

    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 micro.thedroneely.com view
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  • 96/50 words 32s read

    I thought about posting notes on Syncthing but then I’d have to tangentially talk about NixOS. NixOS is my main Linux distribution but Nix/NixOS/Flakes are too hard to write about and I fear they’ve ventured too far into the realm of over–engineering.

    What do I mean by over–engineering? An over–engineered tool is one where even the simplest use cases are non–obvious (to most people) and this can happen when it tries to do too many things with “specificity”. The overall concept is elegant though (explainable in lay terms) and can be applied in other contexts.

    #linux
    tdro

    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 micro.thedroneely.com view
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  • 99/50 words 33s read

    Here’s a final muse for current year. This probably counts as wise posting. On local news there’s sentiment that the world is now “post–truth”… but historically; since when has the world not been post–truth? Truth (verifiability/provability) is ultra rare and trust abundant :-)

    The Internet/Blockchain/whatever is not a truth machine and could never be a truth machine. Inside events/stories/happenings everyone’s just as clueless as in past eras and technological differences become “functionally equivalent” — meaning you either waste time separating signal from noise in “fast” and “fake” information infinitum or waiting for “slow” and “official” carrier pigeons to arrive.

    #musings
    tdro

    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 micro.thedroneely.com view
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  • 90/50 words 30s read

    I’ve since realized that Hugo’s architecture provides a variety of template optimization strategies. Hugo builds pages concurrently, so it might be hard to see on a modern device but before partialCaches or module mount trickery — there’s still the implicit complexity of the output/lookup model.

    Generally the complexity cost of the default output formats are: page > term > taxonomy > section > home. Keeping expensive calls inside a section and/or a home template is usually optimal. and maybe memory should be the only problems with lots of pages.

    #webdev
    tdro

    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 micro.thedroneely.com view
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  • 32/50 words 11s read

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