From 6021a9e22f99bb9b19134e2cb443bdeba852edc6 Mon Sep 17 00:00:00 2001
From: Gregor Kleen <gkleen@yggdrasil.li>
Date: Sat, 27 Mar 2021 18:46:45 +0100
Subject: =?UTF-8?q?=E2=80=A6?=
MIME-Version: 1.0
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---
 accounts/gkleen@sif/xmonad/xmonad.hs |  2 +-
 accounts/gkleen@sif/zshrc            | 17 ++++++++++++++---
 hosts/sif/default.nix                | 11 +++++++++--
 hosts/sif/hw.nix                     |  1 -
 overlays/v4l2loopback.nix            | 37 ++++++++++++++++++++++++++++++++++++
 5 files changed, 61 insertions(+), 7 deletions(-)
 create mode 100644 overlays/v4l2loopback.nix

diff --git a/accounts/gkleen@sif/xmonad/xmonad.hs b/accounts/gkleen@sif/xmonad/xmonad.hs
index 425beaf4..8282ed3f 100644
--- a/accounts/gkleen@sif/xmonad/xmonad.hs
+++ b/accounts/gkleen@sif/xmonad/xmonad.hs
@@ -199,7 +199,7 @@ hostFromName h
                                               , assign' ["work", "uni"] $ className =? "jetbrains-idea-ce"
                                               , assign "read"    $ className =? "llpp"
                                               , assign "read"    $ className =? "Evince"
-                                              , assign "read"    $ fmap ("zathura" `isInfixOf`) title
+                                              , assign "read"    $ className =? "Zathura"
                                               , assign "read"    $ className =? "MuPDF"
                                               , assign "read"    $ className =? "Xournal"
                                               , assign "read"    $ appName =? "com-trollworks-gcs-app-GCS"
diff --git a/accounts/gkleen@sif/zshrc b/accounts/gkleen@sif/zshrc
index c65e35f9..fd1f1002 100644
--- a/accounts/gkleen@sif/zshrc
+++ b/accounts/gkleen@sif/zshrc
@@ -1,9 +1,20 @@
 filebin() {
     basePath=/srv/www/files
-    ssh ymir find "${basePath}" -type f -print0 \
-	| while IFS= read -r -d $'\0' p; do
-	printf "https://f.141.li/%s\n" "${p#${basePath}/}"
+    ssh ymir find /srv/www/files -type f -printf "$'%T@ %TY-%Tm-%TdT%TH:%TM %P\\\\0'" | sort -zn | cut -z -d ' ' -f 2- \
+	| while IFS= read -r -d $'\0' l; do
+	    IFS=' ' read -r t p <<<"${l}"
+	    printf "%s https://f.141.li/%s\n" "${t}" "${p}"
+	  done
+}
+
+push2bin() {
+    if [[ ${#@} -eq 1 && ! -r ${1} ]]; then
+        uux -p 'ymir!push2bin' $(echo -n "${1:t}" | tr -c $'[:alnum:]+-=.' '_')
+    else
+        for f (${@}); do
+	    uux -p 'ymir!push2bin' $(echo -n "${f:t}" | tr -c $'[:alnum:]+-=.' '_') <${f}
 	done
+    fi
 }
 
 genmail() {
diff --git a/hosts/sif/default.nix b/hosts/sif/default.nix
index 2c3c9e3d..737dad36 100644
--- a/hosts/sif/default.nix
+++ b/hosts/sif/default.nix
@@ -38,6 +38,7 @@
       kernelPackages = pkgs.linuxPackages_latest;
       kernelParams = [ "i915.fastboot=1" "intel_pstate=no_hwp" "acpi_backlight=vendor" "thinkpad-acpi.brightness_enable=1" "quiet" ];
       extraModulePackages = with config.boot.kernelPackages; [ v4l2loopback ];
+      kernelModules = ["v4l2loopback"];
 
       tmpOnTmpfs = true;
     };
@@ -54,6 +55,8 @@
         allowedTCPPorts = [ 22 # ssh
                             8000 # quickserve
                           ];
+        allowedUDPPorts = [ 8554 # gopro webcam
+                          ];
       };
 
       networkmanager = {
@@ -81,10 +84,14 @@
       '';
     };
 
-    powerManagement.enable = true;
+    powerManagement = {
+      enable = true;
+
+      cpuFreqGovernor = "schedutil";
+    };
 
     environment.systemPackages = with pkgs; [
-      nvtop brightnessctl
+      nvtop brightnessctl config.boot.kernelPackages.v4l2loopback s-tui
     ];
 
     services = {
diff --git a/hosts/sif/hw.nix b/hosts/sif/hw.nix
index 4a3e6c86..92afb7c9 100644
--- a/hosts/sif/hw.nix
+++ b/hosts/sif/hw.nix
@@ -26,7 +26,6 @@
     ];
 
   nix.maxJobs = 12;
-  powerManagement.cpuFreqGovernor = "powersave";
   # High-DPI console
   console.font = "${pkgs.terminus_font}/share/consolefonts/ter-u28n.psf.gz";
 
diff --git a/overlays/v4l2loopback.nix b/overlays/v4l2loopback.nix
new file mode 100644
index 00000000..335f86a3
--- /dev/null
+++ b/overlays/v4l2loopback.nix
@@ -0,0 +1,37 @@
+final: prev: {
+  linuxPackages_latest = prev.linuxPackages_latest.extend (self: super: {
+    v4l2loopback = super.stdenv.mkDerivation rec {
+      name = "v4l2loopback-${version}-${self.kernel.version}";
+      version = "f62fb9076b6313e5eb82fdcaceadb6b3052f346e";
+
+      src = prev.fetchFromGitHub {
+        owner = "umlaeute";
+        repo = "v4l2loopback";
+        rev = "${version}";
+        sha256 = "VRFtimQQtT8vd1dx5KtUDkmXo3DSOybhNLcAIxQba44=";
+        fetchSubmodules = true;
+      };
+
+      hardeningDisable = [ "format" "pic" ];
+
+      preBuild = ''
+        substituteInPlace Makefile --replace "modules_install" "INSTALL_MOD_PATH=$out modules_install"
+        sed -i '/depmod/d' Makefile
+        export PATH=${final.kmod}/sbin:$PATH
+      '';
+
+      nativeBuildInputs = self.kernel.moduleBuildDependencies;
+      buildInputs = [ final.kmod ];
+
+      makeFlags = [
+        "KERNELRELEASE=${self.kernel.modDirVersion}"
+        "KERNEL_DIR=${self.kernel.dev}/lib/modules/${self.kernel.modDirVersion}/build"
+      ];
+
+      postInstall = ''
+        mkdir -p $out/bin
+        install -m0755 utils/v4l2loopback-ctl $out/bin
+      '';
+    };
+  });
+}
-- 
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