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--- onny:notizen [2026/03/22 09:23] – [age] 10.250.0.1
+++ onny:notizen [2026/04/14 08:59] (current) – [postmarketOS] fdc9:281f:4d7:9ee9::1
@@ Line 291: / Line 291: @@
 Constant quality AV1.  The CRF value can be from 0–63. Lower values mean better quality.
 <code bash>
-ffmpeg -i input.mp4 -c:v libaom-av1 -crf 30 -strict experimental av1_test.mp4
+ffmpeg -i input.mov -c:v libsvtav1 -crf 30 -preset 6 -svtav1-params tune=0 -c:a libopus -b:a 128k output.webm
 </code>
 Burn subtitles, fast video conversion
@@ Line 617: / Line 617: @@
 </code>
 ==== git ====
+unstage changes to a specific file of a specific commit
+<code bash>
+git rebase -i 19d0900f23e0b29fc2706dbbf8a806cea7c3e0f2^
+git restore --staged --source=HEAD^ -- pkgs/by-name/op/openproject/package.nix
+git restore -- pkgs/by-name/op/openproject/package.nix
+git commit --amend
+git rebase --continue
+</code>
+merge changes into last commit
+<code bash>
+git commit -a --amend --no-edit
+</code>
 show remote origin
 <code bash>
 git remote show origin
 </code>
 change remote origin
 <code bash>
@@ Line 981: / Line 997: @@
 </code>
 ===== systemd =====
+systemctl show unit environment
+<code>
+systemctl show rsshub --property=Environment
+</code>
 service hardening
 <code>
@@ Line 1020: / Line 1042: @@
 <code>
 sudo nixos-rebuild switch --flake '/etc/nixos#joes-desktop'
-sudo nixos-rebuild boot --flake '/etc/nixos#joes-desktop' # raspi specific
-</code>
-update channel, rebuild and switch
-<code bash>
-nixos-rebuild switch --upgrade
 </code>
@@ Line 1033: / Line 1048: @@
 <code bash>
 nix search gedit
-</code>
-nixos testing environement
-<code bash>
-nix-shell -p toilet
-</code>
-install unstable package
-<code bash>
-nix-channel --add https://nixos.org/channels/nixos-unstable unstable
-nix-channel --update unstable
-nix-env -iA unstable.pdfarranger
 </code>
@@ Line 1083: / Line 1084: @@
   ];
 </code>
 garbade collector
 <code bash>
 nix-collect-garbage -d
 </code>
 list package files
 <code bash>
 find $(nix eval -f /etc/nixos/apps --raw xerox6000-6010.outPath)
 </code>
 install package
 <code bash>
 nix-env -i icecat
 </code>
 remove package
 <code bash>
@@ Line 1124: / Line 1129: @@
 source venv/bin/activate
 pip install -r requirements.txt
-</code>
-local repository (nixpkgs clone) as systemwide channel
-<code bash>
-$ nix-build nixos/release.nix -A channel --arg nixpkgs  '{ outPath = ./. ; revCount = "'$(git rev-list HEAD | wc -l)'"; shortRev = "'$(git rev-parse --short HEAD)'"; }'
-...
-/nix/store/hash-name/
-$ sudo nix-channel --remove nixos
-$ sudo nix-channel --add file:///nix/store/hash-name/tarballs/thetarball.tar.xz nixos
-$ sudo nix-channel --update
 </code>
@@ Line 1169: / Line 1163: @@
 curl -sL https://github.com/NixOS/nixpkgs/pull/64977.patch \
                 | head -n 1 | grep -o -E -e "[0-9a-f]{40}"
-</code>
-allow unfree package installation nix-env
-<code bash>
-env NIXPKGS_ALLOW_UNFREE=1 nix-env -f /home/onny/projects/nur-packages -iA ocenaudio
 </code>
@@ Line 1220: / Line 1210: @@
 <code>
 command-not-found telnet
-</code>
-use module from unstable
-<code>
-nixpkgs.config.packageOverrides = pkgs: rec {
-  unstable = import unstableTarball { };
-  opensnitch = unstable.opensnitch;
-};
-</code>
-overlay: use / overwrite package from custom remote or local repo / fork:
-<code>
-  nixpkgs.overlays = [
-    (self: super: {
-      foo2zjs = (import (builtins.fetchTarball {
-        url =
-          "https://github.com/onny/nixpkgs/archive/foo2zjs.tar.gz";
-        sha256 = "1jp98jhc4mw9bipdiq7qdrzn3lslk4mi7prqfh2v43isgsvpd6bg";
-      }) { config = { allowUnfree = true; }; }).foo2zjs;
-      linux-wifi-hotspot = (import /home/onny/projects/nixpkgs2 {}).linux-wifi-hotspot;
-    })
-  ];
 </code>
@@ Line 1618: / Line 1584: @@
 </code>
-==== nixops ====
+==== system config ====
-setup
+use module and package from remote repo
-<file - /etc/nixos/configuration.nix>
-virtualisation.libvirtd.enable = true;
-users.extraUsers.myuser.extraGroups = [ "libvirtd" ];
-</file>
-<code bash>
+<code>
-nix-env -iA nixos-unstable.nixopsUnstable
+{
-sudo mkdir /var/lib/libvirt/images
+  inputs = {
-sudo chgrp libvirtd /var/lib/libvirt/images
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.11";
-sudo chmod g+w /var/lib/libvirt/images
+    invoiceplane-unstable.url = "nixpkgs/master";
-sudo virsh pool-define-as default dir --target /var/lib/libvirt/images
+  };
-sudo virsh pool-autostart default
+};
-sudo virsh pool-start default
-nixops create -d example-libvirtd examples/trivial-virtd.nix
-nixops deploy -d example-libvirtd
-nixops list
 </code>
-connect to instance (deployment name: example-libvirtd, machine name: machine)
+<code>
-<code bash>
+disabledModules = [
-nixops ssh -d example-libvirtd machine
+  "services/web-apps/invoiceplane.nix"
+];
+imports = [
+  "${inputs.invoiceplane-unstable}/nixos/modules/services/web-apps/invoiceplane.nix"
+];
+nixpkgs.overlays = [
+  (self: super: {
+    invoiceplane = inputs.invoiceplane-unstable.legacyPackages.x86_64-linux.invoiceplane;
+    plausible = inputs.plausible-riscv.legacyPackages.x86_64-linux.pkgsCross.riscv64.plausible;
+  })
+];
 </code>
+==== modules ====
-delete deployment, delete machine
+converting cfg.settings to strings only for systemd environment variables etc
-<code bash>
-nixops delete -d example-libvirtd
-nixops destroy --include nix-http
+<code>
+let
+  configEnv = concatMapAttrs (
+    name: value:
+    optionalAttrs (value != null) {
+      ${name} = if isBool value then boolToString value else toString value;
+    }
+  ) cfg.settings;
+in
 </code>
+==== flake ====
-start, stop destroy machine foo
+local file path as flake input
-<code bash>
+<code>
-nixops start --include foo
+inputs.verwaltungstracker.url = "git+file:///home/onny/projects/verwaltungstracker";
-nixops stop --include foo
-nixops destroy --include foo
 </code>
-list machines
+development flake.nix
-<code bash>
+<code>
-nixops info
+{
+  description = "Invoiceplane invoice template development shell";
+  inputs.nixpkgs.url = "nixpkgs/nixos-25.11";
+  outputs = { self, nixpkgs, ... }@inputs:
+    let
+      pkgs = nixpkgs.legacyPackages.x86_64-linux;
+    in {
+    devShells.x86_64-linux.default = pkgs.mkShell {
+      packages = [ pkgs.pnpm ];
+    };
+  };
+}
 </code>
 ===== filesystem =====
@@ Line 1770: / Line 1759: @@
 pnpm install jquery@3.5.1 --save # see npmjs.com
 </code>
-update packages
+check package updates
 <code bash>
 pnpm outdated
+</code>
+update specific package
+<code bash>
+pnpm update @nextcloud/dialogs --latest
 </code>
 ===== gitlab-ci =====
@@ Line 1792: / Line 1787: @@
 ===== postmarketOS =====
+update checksum
+<code bash>
+pmbootstrap checksum device-samsung-dream
+</code>
 general chroot management