diff --git a/flake.lock b/flake.lock
index 4ea6158..4fa668f 100644
--- a/flake.lock
+++ b/flake.lock
@@ -112,6 +112,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-21-11": {
+      "locked": {
+        "lastModified": 1658346836,
+        "narHash": "sha256-c9BZZbi0tqCQ4j6CMVDlsut3Q3ET1Fezf+qIslCfkhs=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "a1fe662eb26ffc2a036b37c4670392ade632c413",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-21.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs-unstable": {
       "locked": {
         "lastModified": 1658290795,
@@ -181,6 +197,7 @@
         "fzf-tab": "fzf-tab",
         "home-manager": "home-manager",
         "nixpkgs": "nixpkgs_2",
+        "nixpkgs-21-11": "nixpkgs-21-11",
         "nixpkgs-unstable": "nixpkgs-unstable",
         "nurpkgs": "nurpkgs",
         "registry": "registry"
diff --git a/flake.nix b/flake.nix
index 6a97d95..a90cc54 100644
--- a/flake.nix
+++ b/flake.nix
@@ -8,6 +8,7 @@
         };
         nixpkgs.url = "github:nixos/nixpkgs/nixos-22.05";
         nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
+        nixpkgs-21-11.url = "github:nixos/nixpkgs/nixos-21.11";
         home-manager.url = "github:nix-community/home-manager/release-22.05";
         nurpkgs.url = "github:nix-community/NUR";
         comma.url = "github:nix-community/comma";
@@ -20,7 +21,7 @@
         home-manager.inputs.nixpkgs.follows = "nixpkgs";
     };
 
-    outputs = extraInputs@{ self, nixpkgs, nixpkgs-unstable, home-manager, ... }:
+    outputs = extraInputs@{ self, nixpkgs, nixpkgs-unstable, nixpkgs-21-11, home-manager, ... }:
     let
         system = "x86_64-linux";  # TOOD: Add options for MacOS
 
@@ -39,6 +40,12 @@
             config = { allowUnfree = true; };
         };
 
+        pkgs-21-11 = import nixpkgs-21-11 {
+            inherit system;
+
+            config = { allowUnfree = true; };
+        };
+
         variables = import ./src/common/variables.nix;
     in {
         nixosConfigurations = {
@@ -46,7 +53,7 @@
                 inherit system;
 
                 specialArgs = extraInputs // {
-                  inherit nixpkgs nixpkgs-unstable home-manager pkgs-unstable system;
+                  inherit nixpkgs nixpkgs-unstable home-manager pkgs-unstable pkgs-21-11 system;
                 };
 
                 modules = [
@@ -59,7 +66,7 @@
             "${variables.username}" = home-manager.lib.homeManagerConfiguration rec {
                 inherit system pkgs;
 
-                extraSpecialArgs = extraInputs // { inherit nixpkgs nixpkgs-unstable home-manager pkgs-unstable system; };
+                extraSpecialArgs = extraInputs // { inherit nixpkgs nixpkgs-unstable home-manager pkgs-unstable pkgs-21-11 system; };
 
                 username = variables.username;
                 homeDirectory = "/home/${username}";
diff --git a/src/apps/personal/asciinema.nix b/src/apps/personal/asciinema.nix
index 319a51e..c18a170 100644
--- a/src/apps/personal/asciinema.nix
+++ b/src/apps/personal/asciinema.nix
@@ -1,3 +1,12 @@
-{ pkgs, ... }: {
-    home.packages = [ pkgs.asciinema ];
+{ pkgs, pkgs-21-11, ... }: {
+    home.packages = [ pkgs.asciinema ((import ./asciinema/default.nix { pkgs = pkgs; nodejs = pkgs.nodejs; }).package.override {
+        buildInputs = [ pkgs.makeWrapper ];
+
+        preRebuild = ''
+        wrapProgram $out/lib/node_modules/asciicast2gif-nix/node_modules/asciicast2gif/asciicast2gif --suffix PATH : ${pkgs.lib.makeBinPath [ pkgs.imagemagick pkgs.gifsicle pkgs-21-11.phantomjs2 ]}
+        export PATH=$PATH:${pkgs.lib.makeBinPath [ pkgs.imagemagick pkgs.gifsicle pkgs-21-11.phantomjs2 ]}
+        mkdir -p $out/bin
+        ln -s $out/lib/node_modules/asciicast2gif-nix/node_modules/asciicast2gif/asciicast2gif $out/bin/asciicast2gif
+        '';
+    }) ];
 }
diff --git a/src/apps/personal/asciinema/default.nix b/src/apps/personal/asciinema/default.nix
new file mode 100644
index 0000000..a10eaa3
--- /dev/null
+++ b/src/apps/personal/asciinema/default.nix
@@ -0,0 +1,17 @@
+# This file has been generated by node2nix 1.11.1. Do not edit!
+
+{pkgs ? import <nixpkgs> {
+    inherit system;
+  }, system ? builtins.currentSystem, nodejs ? pkgs."nodejs-12_x"}:
+
+let
+  nodeEnv = import ./node-env.nix {
+    inherit (pkgs) stdenv lib python2 runCommand writeTextFile writeShellScript;
+    inherit pkgs nodejs;
+    libtool = if pkgs.stdenv.isDarwin then pkgs.darwin.cctools else null;
+  };
+in
+import ./node-packages.nix {
+  inherit (pkgs) fetchurl nix-gitignore stdenv lib fetchgit;
+  inherit nodeEnv;
+}
diff --git a/src/apps/personal/asciinema/node-env.nix b/src/apps/personal/asciinema/node-env.nix
new file mode 100644
index 0000000..2590dd2
--- /dev/null
+++ b/src/apps/personal/asciinema/node-env.nix
@@ -0,0 +1,598 @@
+# This file originates from node2nix
+
+{lib, stdenv, nodejs, python2, pkgs, libtool, runCommand, writeTextFile, writeShellScript}:
+
+let
+  # Workaround to cope with utillinux in Nixpkgs 20.09 and util-linux in Nixpkgs master
+  utillinux = if pkgs ? utillinux then pkgs.utillinux else pkgs.util-linux;
+
+  python = if nodejs ? python then nodejs.python else python2;
+
+  # Create a tar wrapper that filters all the 'Ignoring unknown extended header keyword' noise
+  tarWrapper = runCommand "tarWrapper" {} ''
+    mkdir -p $out/bin
+
+    cat > $out/bin/tar <<EOF
+    #! ${stdenv.shell} -e
+    $(type -p tar) "\$@" --warning=no-unknown-keyword --delay-directory-restore
+    EOF
+
+    chmod +x $out/bin/tar
+  '';
+
+  # Function that generates a TGZ file from a NPM project
+  buildNodeSourceDist =
+    { name, version, src, ... }:
+
+    stdenv.mkDerivation {
+      name = "node-tarball-${name}-${version}";
+      inherit src;
+      buildInputs = [ nodejs ];
+      buildPhase = ''
+        export HOME=$TMPDIR
+        tgzFile=$(npm pack | tail -n 1) # Hooks to the pack command will add output (https://docs.npmjs.com/misc/scripts)
+      '';
+      installPhase = ''
+        mkdir -p $out/tarballs
+        mv $tgzFile $out/tarballs
+        mkdir -p $out/nix-support
+        echo "file source-dist $out/tarballs/$tgzFile" >> $out/nix-support/hydra-build-products
+      '';
+    };
+
+  # Common shell logic
+  installPackage = writeShellScript "install-package" ''
+    installPackage() {
+      local packageName=$1 src=$2
+
+      local strippedName
+
+      local DIR=$PWD
+      cd $TMPDIR
+
+      unpackFile $src
+
+      # Make the base dir in which the target dependency resides first
+      mkdir -p "$(dirname "$DIR/$packageName")"
+
+      if [ -f "$src" ]
+      then
+          # Figure out what directory has been unpacked
+          packageDir="$(find . -maxdepth 1 -type d | tail -1)"
+
+          # Restore write permissions to make building work
+          find "$packageDir" -type d -exec chmod u+x {} \;
+          chmod -R u+w "$packageDir"
+
+          # Move the extracted tarball into the output folder
+          mv "$packageDir" "$DIR/$packageName"
+      elif [ -d "$src" ]
+      then
+          # Get a stripped name (without hash) of the source directory.
+          # On old nixpkgs it's already set internally.
+          if [ -z "$strippedName" ]
+          then
+              strippedName="$(stripHash $src)"
+          fi
+
+          # Restore write permissions to make building work
+          chmod -R u+w "$strippedName"
+
+          # Move the extracted directory into the output folder
+          mv "$strippedName" "$DIR/$packageName"
+      fi
+
+      # Change to the package directory to install dependencies
+      cd "$DIR/$packageName"
+    }
+  '';
+
+  # Bundle the dependencies of the package
+  #
+  # Only include dependencies if they don't exist. They may also be bundled in the package.
+  includeDependencies = {dependencies}:
+    lib.optionalString (dependencies != []) (
+      ''
+        mkdir -p node_modules
+        cd node_modules
+      ''
+      + (lib.concatMapStrings (dependency:
+        ''
+          if [ ! -e "${dependency.packageName}" ]; then
+              ${composePackage dependency}
+          fi
+        ''
+      ) dependencies)
+      + ''
+        cd ..
+      ''
+    );
+
+  # Recursively composes the dependencies of a package
+  composePackage = { name, packageName, src, dependencies ? [], ... }@args:
+    builtins.addErrorContext "while evaluating node package '${packageName}'" ''
+      installPackage "${packageName}" "${src}"
+      ${includeDependencies { inherit dependencies; }}
+      cd ..
+      ${lib.optionalString (builtins.substring 0 1 packageName == "@") "cd .."}
+    '';
+
+  pinpointDependencies = {dependencies, production}:
+    let
+      pinpointDependenciesFromPackageJSON = writeTextFile {
+        name = "pinpointDependencies.js";
+        text = ''
+          var fs = require('fs');
+          var path = require('path');
+
+          function resolveDependencyVersion(location, name) {
+              if(location == process.env['NIX_STORE']) {
+                  return null;
+              } else {
+                  var dependencyPackageJSON = path.join(location, "node_modules", name, "package.json");
+
+                  if(fs.existsSync(dependencyPackageJSON)) {
+                      var dependencyPackageObj = JSON.parse(fs.readFileSync(dependencyPackageJSON));
+
+                      if(dependencyPackageObj.name == name) {
+                          return dependencyPackageObj.version;
+                      }
+                  } else {
+                      return resolveDependencyVersion(path.resolve(location, ".."), name);
+                  }
+              }
+          }
+
+          function replaceDependencies(dependencies) {
+              if(typeof dependencies == "object" && dependencies !== null) {
+                  for(var dependency in dependencies) {
+                      var resolvedVersion = resolveDependencyVersion(process.cwd(), dependency);
+
+                      if(resolvedVersion === null) {
+                          process.stderr.write("WARNING: cannot pinpoint dependency: "+dependency+", context: "+process.cwd()+"\n");
+                      } else {
+                          dependencies[dependency] = resolvedVersion;
+                      }
+                  }
+              }
+          }
+
+          /* Read the package.json configuration */
+          var packageObj = JSON.parse(fs.readFileSync('./package.json'));
+
+          /* Pinpoint all dependencies */
+          replaceDependencies(packageObj.dependencies);
+          if(process.argv[2] == "development") {
+              replaceDependencies(packageObj.devDependencies);
+          }
+          replaceDependencies(packageObj.optionalDependencies);
+
+          /* Write the fixed package.json file */
+          fs.writeFileSync("package.json", JSON.stringify(packageObj, null, 2));
+        '';
+      };
+    in
+    ''
+      node ${pinpointDependenciesFromPackageJSON} ${if production then "production" else "development"}
+
+      ${lib.optionalString (dependencies != [])
+        ''
+          if [ -d node_modules ]
+          then
+              cd node_modules
+              ${lib.concatMapStrings (dependency: pinpointDependenciesOfPackage dependency) dependencies}
+              cd ..
+          fi
+        ''}
+    '';
+
+  # Recursively traverses all dependencies of a package and pinpoints all
+  # dependencies in the package.json file to the versions that are actually
+  # being used.
+
+  pinpointDependenciesOfPackage = { packageName, dependencies ? [], production ? true, ... }@args:
+    ''
+      if [ -d "${packageName}" ]
+      then
+          cd "${packageName}"
+          ${pinpointDependencies { inherit dependencies production; }}
+          cd ..
+          ${lib.optionalString (builtins.substring 0 1 packageName == "@") "cd .."}
+      fi
+    '';
+
+  # Extract the Node.js source code which is used to compile packages with
+  # native bindings
+  nodeSources = runCommand "node-sources" {} ''
+    tar --no-same-owner --no-same-permissions -xf ${nodejs.src}
+    mv node-* $out
+  '';
+
+  # Script that adds _integrity fields to all package.json files to prevent NPM from consulting the cache (that is empty)
+  addIntegrityFieldsScript = writeTextFile {
+    name = "addintegrityfields.js";
+    text = ''
+      var fs = require('fs');
+      var path = require('path');
+
+      function augmentDependencies(baseDir, dependencies) {
+          for(var dependencyName in dependencies) {
+              var dependency = dependencies[dependencyName];
+
+              // Open package.json and augment metadata fields
+              var packageJSONDir = path.join(baseDir, "node_modules", dependencyName);
+              var packageJSONPath = path.join(packageJSONDir, "package.json");
+
+              if(fs.existsSync(packageJSONPath)) { // Only augment packages that exist. Sometimes we may have production installs in which development dependencies can be ignored
+                  console.log("Adding metadata fields to: "+packageJSONPath);
+                  var packageObj = JSON.parse(fs.readFileSync(packageJSONPath));
+
+                  if(dependency.integrity) {
+                      packageObj["_integrity"] = dependency.integrity;
+                  } else {
+                      packageObj["_integrity"] = "sha1-000000000000000000000000000="; // When no _integrity string has been provided (e.g. by Git dependencies), add a dummy one. It does not seem to harm and it bypasses downloads.
+                  }
+
+                  if(dependency.resolved) {
+                      packageObj["_resolved"] = dependency.resolved; // Adopt the resolved property if one has been provided
+                  } else {
+                      packageObj["_resolved"] = dependency.version; // Set the resolved version to the version identifier. This prevents NPM from cloning Git repositories.
+                  }
+
+                  if(dependency.from !== undefined) { // Adopt from property if one has been provided
+                      packageObj["_from"] = dependency.from;
+                  }
+
+                  fs.writeFileSync(packageJSONPath, JSON.stringify(packageObj, null, 2));
+              }
+
+              // Augment transitive dependencies
+              if(dependency.dependencies !== undefined) {
+                  augmentDependencies(packageJSONDir, dependency.dependencies);
+              }
+          }
+      }
+
+      if(fs.existsSync("./package-lock.json")) {
+          var packageLock = JSON.parse(fs.readFileSync("./package-lock.json"));
+
+          if(![1, 2].includes(packageLock.lockfileVersion)) {
+            process.stderr.write("Sorry, I only understand lock file versions 1 and 2!\n");
+            process.exit(1);
+          }
+
+          if(packageLock.dependencies !== undefined) {
+              augmentDependencies(".", packageLock.dependencies);
+          }
+      }
+    '';
+  };
+
+  # Reconstructs a package-lock file from the node_modules/ folder structure and package.json files with dummy sha1 hashes
+  reconstructPackageLock = writeTextFile {
+    name = "addintegrityfields.js";
+    text = ''
+      var fs = require('fs');
+      var path = require('path');
+
+      var packageObj = JSON.parse(fs.readFileSync("package.json"));
+
+      var lockObj = {
+          name: packageObj.name,
+          version: packageObj.version,
+          lockfileVersion: 1,
+          requires: true,
+          dependencies: {}
+      };
+
+      function augmentPackageJSON(filePath, dependencies) {
+          var packageJSON = path.join(filePath, "package.json");
+          if(fs.existsSync(packageJSON)) {
+              var packageObj = JSON.parse(fs.readFileSync(packageJSON));
+              dependencies[packageObj.name] = {
+                  version: packageObj.version,
+                  integrity: "sha1-000000000000000000000000000=",
+                  dependencies: {}
+              };
+              processDependencies(path.join(filePath, "node_modules"), dependencies[packageObj.name].dependencies);
+          }
+      }
+
+      function processDependencies(dir, dependencies) {
+          if(fs.existsSync(dir)) {
+              var files = fs.readdirSync(dir);
+
+              files.forEach(function(entry) {
+                  var filePath = path.join(dir, entry);
+                  var stats = fs.statSync(filePath);
+
+                  if(stats.isDirectory()) {
+                      if(entry.substr(0, 1) == "@") {
+                          // When we encounter a namespace folder, augment all packages belonging to the scope
+                          var pkgFiles = fs.readdirSync(filePath);
+
+                          pkgFiles.forEach(function(entry) {
+                              if(stats.isDirectory()) {
+                                  var pkgFilePath = path.join(filePath, entry);
+                                  augmentPackageJSON(pkgFilePath, dependencies);
+                              }
+                          });
+                      } else {
+                          augmentPackageJSON(filePath, dependencies);
+                      }
+                  }
+              });
+          }
+      }
+
+      processDependencies("node_modules", lockObj.dependencies);
+
+      fs.writeFileSync("package-lock.json", JSON.stringify(lockObj, null, 2));
+    '';
+  };
+
+  prepareAndInvokeNPM = {packageName, bypassCache, reconstructLock, npmFlags, production}:
+    let
+      forceOfflineFlag = if bypassCache then "--offline" else "--registry http://www.example.com";
+    in
+    ''
+        # Pinpoint the versions of all dependencies to the ones that are actually being used
+        echo "pinpointing versions of dependencies..."
+        source $pinpointDependenciesScriptPath
+
+        # Patch the shebangs of the bundled modules to prevent them from
+        # calling executables outside the Nix store as much as possible
+        patchShebangs .
+
+        # Deploy the Node.js package by running npm install. Since the
+        # dependencies have been provided already by ourselves, it should not
+        # attempt to install them again, which is good, because we want to make
+        # it Nix's responsibility. If it needs to install any dependencies
+        # anyway (e.g. because the dependency parameters are
+        # incomplete/incorrect), it fails.
+        #
+        # The other responsibilities of NPM are kept -- version checks, build
+        # steps, postprocessing etc.
+
+        export HOME=$TMPDIR
+        cd "${packageName}"
+        runHook preRebuild
+
+        ${lib.optionalString bypassCache ''
+          ${lib.optionalString reconstructLock ''
+            if [ -f package-lock.json ]
+            then
+                echo "WARNING: Reconstruct lock option enabled, but a lock file already exists!"
+                echo "This will most likely result in version mismatches! We will remove the lock file and regenerate it!"
+                rm package-lock.json
+            else
+                echo "No package-lock.json file found, reconstructing..."
+            fi
+
+            node ${reconstructPackageLock}
+          ''}
+
+          node ${addIntegrityFieldsScript}
+        ''}
+
+        npm ${forceOfflineFlag} --nodedir=${nodeSources} ${npmFlags} ${lib.optionalString production "--production"} rebuild
+
+        if [ "''${dontNpmInstall-}" != "1" ]
+        then
+            # NPM tries to download packages even when they already exist if npm-shrinkwrap is used.
+            rm -f npm-shrinkwrap.json
+
+            npm ${forceOfflineFlag} --nodedir=${nodeSources} ${npmFlags} ${lib.optionalString production "--production"} install
+        fi
+    '';
+
+  # Builds and composes an NPM package including all its dependencies
+  buildNodePackage =
+    { name
+    , packageName
+    , version ? null
+    , dependencies ? []
+    , buildInputs ? []
+    , production ? true
+    , npmFlags ? ""
+    , dontNpmInstall ? false
+    , bypassCache ? false
+    , reconstructLock ? false
+    , preRebuild ? ""
+    , dontStrip ? true
+    , unpackPhase ? "true"
+    , buildPhase ? "true"
+    , meta ? {}
+    , ... }@args:
+
+    let
+      extraArgs = removeAttrs args [ "name" "dependencies" "buildInputs" "dontStrip" "dontNpmInstall" "preRebuild" "unpackPhase" "buildPhase" "meta" ];
+    in
+    stdenv.mkDerivation ({
+      name = "${name}${if version == null then "" else "-${version}"}";
+      buildInputs = [ tarWrapper python nodejs ]
+        ++ lib.optional (stdenv.isLinux) utillinux
+        ++ lib.optional (stdenv.isDarwin) libtool
+        ++ buildInputs;
+
+      inherit nodejs;
+
+      inherit dontStrip; # Stripping may fail a build for some package deployments
+      inherit dontNpmInstall preRebuild unpackPhase buildPhase;
+
+      compositionScript = composePackage args;
+      pinpointDependenciesScript = pinpointDependenciesOfPackage args;
+
+      passAsFile = [ "compositionScript" "pinpointDependenciesScript" ];
+
+      installPhase = ''
+        source ${installPackage}
+
+        # Create and enter a root node_modules/ folder
+        mkdir -p $out/lib/node_modules
+        cd $out/lib/node_modules
+
+        # Compose the package and all its dependencies
+        source $compositionScriptPath
+
+        ${prepareAndInvokeNPM { inherit packageName bypassCache reconstructLock npmFlags production; }}
+
+        # Create symlink to the deployed executable folder, if applicable
+        if [ -d "$out/lib/node_modules/.bin" ]
+        then
+            ln -s $out/lib/node_modules/.bin $out/bin
+
+            # Patch the shebang lines of all the executables
+            ls $out/bin/* | while read i
+            do
+                file="$(readlink -f "$i")"
+                chmod u+rwx "$file"
+                patchShebangs "$file"
+            done
+        fi
+
+        # Create symlinks to the deployed manual page folders, if applicable
+        if [ -d "$out/lib/node_modules/${packageName}/man" ]
+        then
+            mkdir -p $out/share
+            for dir in "$out/lib/node_modules/${packageName}/man/"*
+            do
+                mkdir -p $out/share/man/$(basename "$dir")
+                for page in "$dir"/*
+                do
+                    ln -s $page $out/share/man/$(basename "$dir")
+                done
+            done
+        fi
+
+        # Run post install hook, if provided
+        runHook postInstall
+      '';
+
+      meta = {
+        # default to Node.js' platforms
+        platforms = nodejs.meta.platforms;
+      } // meta;
+    } // extraArgs);
+
+  # Builds a node environment (a node_modules folder and a set of binaries)
+  buildNodeDependencies =
+    { name
+    , packageName
+    , version ? null
+    , src
+    , dependencies ? []
+    , buildInputs ? []
+    , production ? true
+    , npmFlags ? ""
+    , dontNpmInstall ? false
+    , bypassCache ? false
+    , reconstructLock ? false
+    , dontStrip ? true
+    , unpackPhase ? "true"
+    , buildPhase ? "true"
+    , ... }@args:
+
+    let
+      extraArgs = removeAttrs args [ "name" "dependencies" "buildInputs" ];
+    in
+      stdenv.mkDerivation ({
+        name = "node-dependencies-${name}${if version == null then "" else "-${version}"}";
+
+        buildInputs = [ tarWrapper python nodejs ]
+          ++ lib.optional (stdenv.isLinux) utillinux
+          ++ lib.optional (stdenv.isDarwin) libtool
+          ++ buildInputs;
+
+        inherit dontStrip; # Stripping may fail a build for some package deployments
+        inherit dontNpmInstall unpackPhase buildPhase;
+
+        includeScript = includeDependencies { inherit dependencies; };
+        pinpointDependenciesScript = pinpointDependenciesOfPackage args;
+
+        passAsFile = [ "includeScript" "pinpointDependenciesScript" ];
+
+        installPhase = ''
+          source ${installPackage}
+
+          mkdir -p $out/${packageName}
+          cd $out/${packageName}
+
+          source $includeScriptPath
+
+          # Create fake package.json to make the npm commands work properly
+          cp ${src}/package.json .
+          chmod 644 package.json
+          ${lib.optionalString bypassCache ''
+            if [ -f ${src}/package-lock.json ]
+            then
+                cp ${src}/package-lock.json .
+                chmod 644 package-lock.json
+            fi
+          ''}
+
+          # Go to the parent folder to make sure that all packages are pinpointed
+          cd ..
+          ${lib.optionalString (builtins.substring 0 1 packageName == "@") "cd .."}
+
+          ${prepareAndInvokeNPM { inherit packageName bypassCache reconstructLock npmFlags production; }}
+
+          # Expose the executables that were installed
+          cd ..
+          ${lib.optionalString (builtins.substring 0 1 packageName == "@") "cd .."}
+
+          mv ${packageName} lib
+          ln -s $out/lib/node_modules/.bin $out/bin
+        '';
+      } // extraArgs);
+
+  # Builds a development shell
+  buildNodeShell =
+    { name
+    , packageName
+    , version ? null
+    , src
+    , dependencies ? []
+    , buildInputs ? []
+    , production ? true
+    , npmFlags ? ""
+    , dontNpmInstall ? false
+    , bypassCache ? false
+    , reconstructLock ? false
+    , dontStrip ? true
+    , unpackPhase ? "true"
+    , buildPhase ? "true"
+    , ... }@args:
+
+    let
+      nodeDependencies = buildNodeDependencies args;
+      extraArgs = removeAttrs args [ "name" "dependencies" "buildInputs" "dontStrip" "dontNpmInstall" "unpackPhase" "buildPhase" ];
+    in
+    stdenv.mkDerivation ({
+      name = "node-shell-${name}${if version == null then "" else "-${version}"}";
+
+      buildInputs = [ python nodejs ] ++ lib.optional (stdenv.isLinux) utillinux ++ buildInputs;
+      buildCommand = ''
+        mkdir -p $out/bin
+        cat > $out/bin/shell <<EOF
+        #! ${stdenv.shell} -e
+        $shellHook
+        exec ${stdenv.shell}
+        EOF
+        chmod +x $out/bin/shell
+      '';
+
+      # Provide the dependencies in a development shell through the NODE_PATH environment variable
+      inherit nodeDependencies;
+      shellHook = lib.optionalString (dependencies != []) ''
+        export NODE_PATH=${nodeDependencies}/lib/node_modules
+        export PATH="${nodeDependencies}/bin:$PATH"
+      '';
+    } // extraArgs);
+in
+{
+  buildNodeSourceDist = lib.makeOverridable buildNodeSourceDist;
+  buildNodePackage = lib.makeOverridable buildNodePackage;
+  buildNodeDependencies = lib.makeOverridable buildNodeDependencies;
+  buildNodeShell = lib.makeOverridable buildNodeShell;
+}
diff --git a/src/apps/personal/asciinema/node-packages.nix b/src/apps/personal/asciinema/node-packages.nix
new file mode 100644
index 0000000..76070d4
--- /dev/null
+++ b/src/apps/personal/asciinema/node-packages.nix
@@ -0,0 +1,875 @@
+# This file has been generated by node2nix 1.11.1. Do not edit!
+
+{nodeEnv, fetchurl, fetchgit, nix-gitignore, stdenv, lib, globalBuildInputs ? []}:
+
+let
+  sources = {
+    "ajv-6.12.6" = {
+      name = "ajv";
+      packageName = "ajv";
+      version = "6.12.6";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/ajv/-/ajv-6.12.6.tgz";
+        sha512 = "j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==";
+      };
+    };
+    "asciicast2gif-0.2.1" = {
+      name = "asciicast2gif";
+      packageName = "asciicast2gif";
+      version = "0.2.1";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/asciicast2gif/-/asciicast2gif-0.2.1.tgz";
+        sha512 = "1BVUXfJhIPsVN3Jn4IYqdaLRvn7omfUbJJZdC25FTp35kwoSNUf2EEbiViwdhjIQUKBzmAUGQWJ7y7PpEhVabw==";
+      };
+    };
+    "asn1-0.2.6" = {
+      name = "asn1";
+      packageName = "asn1";
+      version = "0.2.6";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/asn1/-/asn1-0.2.6.tgz";
+        sha512 = "ix/FxPn0MDjeyJ7i/yoHGFt/EX6LyNbxSEhPPXODPL+KB0VPk86UYfL0lMdy+KCnv+fmvIzySwaK5COwqVbWTQ==";
+      };
+    };
+    "assert-plus-1.0.0" = {
+      name = "assert-plus";
+      packageName = "assert-plus";
+      version = "1.0.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz";
+        sha512 = "NfJ4UzBCcQGLDlQq7nHxH+tv3kyZ0hHQqF5BO6J7tNJeP5do1llPr8dZ8zHonfhAu0PHAdMkSo+8o0wxg9lZWw==";
+      };
+    };
+    "asynckit-0.4.0" = {
+      name = "asynckit";
+      packageName = "asynckit";
+      version = "0.4.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz";
+        sha512 = "Oei9OH4tRh0YqU3GxhX79dM/mwVgvbZJaSNaRk+bshkj0S5cfHcgYakreBjrHwatXKbz+IoIdYLxrKim2MjW0Q==";
+      };
+    };
+    "aws-sign2-0.7.0" = {
+      name = "aws-sign2";
+      packageName = "aws-sign2";
+      version = "0.7.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.7.0.tgz";
+        sha512 = "08kcGqnYf/YmjoRhfxyu+CLxBjUtHLXLXX/vUfx9l2LYzG3c1m61nrpyFUZI6zeS+Li/wWMMidD9KgrqtGq3mA==";
+      };
+    };
+    "aws4-1.11.0" = {
+      name = "aws4";
+      packageName = "aws4";
+      version = "1.11.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/aws4/-/aws4-1.11.0.tgz";
+        sha512 = "xh1Rl34h6Fi1DC2WWKfxUTVqRsNnr6LsKz2+hfwDxQJWmrx8+c7ylaqBMcHfl1U1r2dsifOvKX3LQuLNZ+XSvA==";
+      };
+    };
+    "bcrypt-pbkdf-1.0.2" = {
+      name = "bcrypt-pbkdf";
+      packageName = "bcrypt-pbkdf";
+      version = "1.0.2";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz";
+        sha512 = "qeFIXtP4MSoi6NLqO12WfqARWWuCKi2Rn/9hJLEmtB5yTNr9DqFWkJRCf2qShWzPeAMRnOgCrq0sg/KLv5ES9w==";
+      };
+    };
+    "buffer-crc32-0.2.13" = {
+      name = "buffer-crc32";
+      packageName = "buffer-crc32";
+      version = "0.2.13";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/buffer-crc32/-/buffer-crc32-0.2.13.tgz";
+        sha512 = "VO9Ht/+p3SN7SKWqcrgEzjGbRSJYTx+Q1pTQC0wrWqHx0vpJraQ6GtHx8tvcg1rlK1byhU5gccxgOgj7B0TDkQ==";
+      };
+    };
+    "buffer-from-1.1.2" = {
+      name = "buffer-from";
+      packageName = "buffer-from";
+      version = "1.1.2";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.2.tgz";
+        sha512 = "E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==";
+      };
+    };
+    "caseless-0.12.0" = {
+      name = "caseless";
+      packageName = "caseless";
+      version = "0.12.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/caseless/-/caseless-0.12.0.tgz";
+        sha512 = "4tYFyifaFfGacoiObjJegolkwSU4xQNGbVgUiNYVUxbQ2x2lUsFvY4hVgVzGiIe6WLOPqycWXA40l+PWsxthUw==";
+      };
+    };
+    "combined-stream-1.0.8" = {
+      name = "combined-stream";
+      packageName = "combined-stream";
+      version = "1.0.8";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz";
+        sha512 = "FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==";
+      };
+    };
+    "concat-stream-1.6.2" = {
+      name = "concat-stream";
+      packageName = "concat-stream";
+      version = "1.6.2";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/concat-stream/-/concat-stream-1.6.2.tgz";
+        sha512 = "27HBghJxjiZtIk3Ycvn/4kbJk/1uZuJFfuPEns6LaEvpvG1f0hTea8lilrouyo9mVc2GWdcEZ8OLoGmSADlrCw==";
+      };
+    };
+    "core-util-is-1.0.2" = {
+      name = "core-util-is";
+      packageName = "core-util-is";
+      version = "1.0.2";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz";
+        sha512 = "3lqz5YjWTYnW6dlDa5TLaTCcShfar1e40rmcJVwCBJC6mWlFuj0eCHIElmG1g5kyuJ/GD+8Wn4FFCcz4gJPfaQ==";
+      };
+    };
+    "core-util-is-1.0.3" = {
+      name = "core-util-is";
+      packageName = "core-util-is";
+      version = "1.0.3";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.3.tgz";
+        sha512 = "ZQBvi1DcpJ4GDqanjucZ2Hj3wEO5pZDS89BWbkcrvdxksJorwUDDZamX9ldFkp9aw2lmBDLgkObEA4DWNJ9FYQ==";
+      };
+    };
+    "dashdash-1.14.1" = {
+      name = "dashdash";
+      packageName = "dashdash";
+      version = "1.14.1";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/dashdash/-/dashdash-1.14.1.tgz";
+        sha512 = "jRFi8UDGo6j+odZiEpjazZaWqEal3w/basFjQHQEwVtZJGDpxbH1MeYluwCS8Xq5wmLJooDlMgvVarmWfGM44g==";
+      };
+    };
+    "debug-2.6.9" = {
+      name = "debug";
+      packageName = "debug";
+      version = "2.6.9";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz";
+        sha512 = "bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==";
+      };
+    };
+    "delayed-stream-1.0.0" = {
+      name = "delayed-stream";
+      packageName = "delayed-stream";
+      version = "1.0.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz";
+        sha512 = "ZySD7Nf91aLB0RxL4KGrKHBXl7Eds1DAmEdcoVawXnLD7SDhpNgtuII2aAkg7a7QS41jxPSZ17p4VdGnMHk3MQ==";
+      };
+    };
+    "ecc-jsbn-0.1.2" = {
+      name = "ecc-jsbn";
+      packageName = "ecc-jsbn";
+      version = "0.1.2";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz";
+        sha512 = "eh9O+hwRHNbG4BLTjEl3nw044CkGm5X6LoaCf7LPp7UU8Qrt47JYNi6nPX8xjW97TKGKm1ouctg0QSpZe9qrnw==";
+      };
+    };
+    "es6-promise-4.2.8" = {
+      name = "es6-promise";
+      packageName = "es6-promise";
+      version = "4.2.8";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/es6-promise/-/es6-promise-4.2.8.tgz";
+        sha512 = "HJDGx5daxeIvxdBxvG2cb9g4tEvwIk3i8+nhX0yGrYmZUzbkdg8QbDevheDB8gd0//uPj4c1EQua8Q+MViT0/w==";
+      };
+    };
+    "extend-3.0.2" = {
+      name = "extend";
+      packageName = "extend";
+      version = "3.0.2";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz";
+        sha512 = "fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g==";
+      };
+    };
+    "extract-zip-1.7.0" = {
+      name = "extract-zip";
+      packageName = "extract-zip";
+      version = "1.7.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/extract-zip/-/extract-zip-1.7.0.tgz";
+        sha512 = "xoh5G1W/PB0/27lXgMQyIhP5DSY/LhoCsOyZgb+6iMmRtCwVBo55uKaMoEYrDCKQhWvqEip5ZPKAc6eFNyf/MA==";
+      };
+    };
+    "extsprintf-1.3.0" = {
+      name = "extsprintf";
+      packageName = "extsprintf";
+      version = "1.3.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/extsprintf/-/extsprintf-1.3.0.tgz";
+        sha512 = "11Ndz7Nv+mvAC1j0ktTa7fAb0vLyGGX+rMHNBYQviQDGU0Hw7lhctJANqbPhu9nV9/izT/IntTgZ7Im/9LJs9g==";
+      };
+    };
+    "fast-deep-equal-3.1.3" = {
+      name = "fast-deep-equal";
+      packageName = "fast-deep-equal";
+      version = "3.1.3";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz";
+        sha512 = "f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==";
+      };
+    };
+    "fast-json-stable-stringify-2.1.0" = {
+      name = "fast-json-stable-stringify";
+      packageName = "fast-json-stable-stringify";
+      version = "2.1.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz";
+        sha512 = "lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw==";
+      };
+    };
+    "fd-slicer-1.1.0" = {
+      name = "fd-slicer";
+      packageName = "fd-slicer";
+      version = "1.1.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/fd-slicer/-/fd-slicer-1.1.0.tgz";
+        sha512 = "cE1qsB/VwyQozZ+q1dGxR8LBYNZeofhEdUNGSMbQD3Gw2lAzX9Zb3uIU6Ebc/Fmyjo9AWWfnn0AUCHqtevs/8g==";
+      };
+    };
+    "forever-agent-0.6.1" = {
+      name = "forever-agent";
+      packageName = "forever-agent";
+      version = "0.6.1";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/forever-agent/-/forever-agent-0.6.1.tgz";
+        sha512 = "j0KLYPhm6zeac4lz3oJ3o65qvgQCcPubiyotZrXqEaG4hNagNYO8qdlUrX5vwqv9ohqeT/Z3j6+yW067yWWdUw==";
+      };
+    };
+    "form-data-2.3.3" = {
+      name = "form-data";
+      packageName = "form-data";
+      version = "2.3.3";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/form-data/-/form-data-2.3.3.tgz";
+        sha512 = "1lLKB2Mu3aGP1Q/2eCOx0fNbRMe7XdwktwOruhfqqd0rIJWwN4Dh+E3hrPSlDCXnSR7UtZ1N38rVXm+6+MEhJQ==";
+      };
+    };
+    "fs-extra-1.0.0" = {
+      name = "fs-extra";
+      packageName = "fs-extra";
+      version = "1.0.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/fs-extra/-/fs-extra-1.0.0.tgz";
+        sha512 = "VerQV6vEKuhDWD2HGOybV6v5I73syoc/cXAbKlgTC7M/oFVEtklWlp9QH2Ijw3IaWDOQcMkldSPa7zXy79Z/UQ==";
+      };
+    };
+    "getpass-0.1.7" = {
+      name = "getpass";
+      packageName = "getpass";
+      version = "0.1.7";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/getpass/-/getpass-0.1.7.tgz";
+        sha512 = "0fzj9JxOLfJ+XGLhR8ze3unN0KZCgZwiSSDz168VERjK8Wl8kVSdcu2kspd4s4wtAa1y/qrVRiAA0WclVsu0ng==";
+      };
+    };
+    "graceful-fs-4.2.10" = {
+      name = "graceful-fs";
+      packageName = "graceful-fs";
+      version = "4.2.10";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.10.tgz";
+        sha512 = "9ByhssR2fPVsNZj478qUUbKfmL0+t5BDVyjShtyZZLiK7ZDAArFFfopyOTj0M05wE2tJPisA4iTnnXl2YoPvOA==";
+      };
+    };
+    "har-schema-2.0.0" = {
+      name = "har-schema";
+      packageName = "har-schema";
+      version = "2.0.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/har-schema/-/har-schema-2.0.0.tgz";
+        sha512 = "Oqluz6zhGX8cyRaTQlFMPw80bSJVG2x/cFb8ZPhUILGgHka9SsokCCOQgpveePerqidZOrT14ipqfJb7ILcW5Q==";
+      };
+    };
+    "har-validator-5.1.5" = {
+      name = "har-validator";
+      packageName = "har-validator";
+      version = "5.1.5";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/har-validator/-/har-validator-5.1.5.tgz";
+        sha512 = "nmT2T0lljbxdQZfspsno9hgrG3Uir6Ks5afism62poxqBM6sDnMEuPmzTq8XN0OEwqKLLdh1jQI3qyE66Nzb3w==";
+      };
+    };
+    "hasha-2.2.0" = {
+      name = "hasha";
+      packageName = "hasha";
+      version = "2.2.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/hasha/-/hasha-2.2.0.tgz";
+        sha512 = "jZ38TU/EBiGKrmyTNNZgnvCZHNowiRI4+w/I9noMlekHTZH3KyGgvJLmhSgykeAQ9j2SYPDosM0Bg3wHfzibAQ==";
+      };
+    };
+    "http-signature-1.2.0" = {
+      name = "http-signature";
+      packageName = "http-signature";
+      version = "1.2.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/http-signature/-/http-signature-1.2.0.tgz";
+        sha512 = "CAbnr6Rz4CYQkLYUtSNXxQPUH2gK8f3iWexVlsnMeD+GjlsQ0Xsy1cOX+mN3dtxYomRy21CiOzU8Uhw6OwncEQ==";
+      };
+    };
+    "inherits-2.0.4" = {
+      name = "inherits";
+      packageName = "inherits";
+      version = "2.0.4";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz";
+        sha512 = "k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==";
+      };
+    };
+    "is-stream-1.1.0" = {
+      name = "is-stream";
+      packageName = "is-stream";
+      version = "1.1.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/is-stream/-/is-stream-1.1.0.tgz";
+        sha512 = "uQPm8kcs47jx38atAcWTVxyltQYoPT68y9aWYdV6yWXSyW8mzSat0TL6CiWdZeCdF3KrAvpVtnHbTv4RN+rqdQ==";
+      };
+    };
+    "is-typedarray-1.0.0" = {
+      name = "is-typedarray";
+      packageName = "is-typedarray";
+      version = "1.0.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/is-typedarray/-/is-typedarray-1.0.0.tgz";
+        sha512 = "cyA56iCMHAh5CdzjJIa4aohJyeO1YbwLi3Jc35MmRU6poroFjIGZzUzupGiRPOjgHg9TLu43xbpwXk523fMxKA==";
+      };
+    };
+    "isarray-1.0.0" = {
+      name = "isarray";
+      packageName = "isarray";
+      version = "1.0.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz";
+        sha512 = "VLghIWNM6ELQzo7zwmcg0NmTVyWKYjvIeM83yjp0wRDTmUnrM678fQbcKBo6n2CJEF0szoG//ytg+TKla89ALQ==";
+      };
+    };
+    "isexe-2.0.0" = {
+      name = "isexe";
+      packageName = "isexe";
+      version = "2.0.0";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/isexe/-/isexe-2.0.0.tgz";
+        sha512 = "RHxMLp9lnKHGHRng9QFhRCMbYAcVpn69smSGcq3f36xjgVVWThj4qqLbTLlq7Ssj8B+fIQ1EuCEGI2lKsyQeIw==";
+      };
+    };
+    "isstream-0.1.2" = {
+      name = "isstream";
+      packageName = "isstream";
+      version = "0.1.2";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/isstream/-/isstream-0.1.2.tgz";
+        sha512 = "Yljz7ffyPbrLpLngrMtZ7NduUgVvi6wG9RJ9IUcyCd59YQ911PBJphODUcbOVbqYfxe1wuYf/LJ8PauMRwsM/g==";
+      };
+    };
+    "jsbn-0.1.1" = {
+      name = "jsbn";
+      packageName = "jsbn";
+      version = "0.1.1";
+      src = fetchurl {
+        url = "https://registry.npmjs.org/jsbn/-/jsbn-0.1.1.tgz";
+        sha512 = "UVU9dibq2JcFWxQPA6KCqj5O42VOmAY3zQUfEKxU0KpTGXwNoCjkX1e13eHNvw/xPynt6pU0rZ1htjWTNTSXsg==";
+      };
+    };
+    "json-schema-0.4.0" = {
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+      sources."oauth-sign-0.9.0"
+      sources."pend-1.2.0"
+      sources."performance-now-2.1.0"
+      sources."phantomjs-prebuilt-2.1.16"
+      sources."pinkie-2.0.4"
+      sources."pinkie-promise-2.0.1"
+      sources."process-nextick-args-2.0.1"
+      sources."progress-1.1.8"
+      sources."psl-1.9.0"
+      sources."punycode-2.1.1"
+      sources."qs-6.5.3"
+      sources."readable-stream-2.3.7"
+      sources."request-2.88.2"
+      sources."request-progress-2.0.1"
+      sources."safe-buffer-5.1.2"
+      sources."safer-buffer-2.1.2"
+      sources."sshpk-1.17.0"
+      sources."string_decoder-1.1.1"
+      sources."throttleit-1.0.0"
+      sources."tough-cookie-2.5.0"
+      sources."tunnel-agent-0.6.0"
+      sources."tweetnacl-0.14.5"
+      sources."typedarray-0.0.6"
+      sources."uri-js-4.4.1"
+      sources."util-deprecate-1.0.2"
+      sources."uuid-3.4.0"
+      (sources."verror-1.10.0" // {
+        dependencies = [
+          sources."core-util-is-1.0.2"
+        ];
+      })
+      sources."which-1.3.1"
+      sources."yauzl-2.10.0"
+    ];
+    buildInputs = globalBuildInputs;
+    meta = {
+      license = "MIT";
+    };
+    production = true;
+    bypassCache = true;
+    reconstructLock = true;
+  };
+in
+{
+  args = args;
+  sources = sources;
+  tarball = nodeEnv.buildNodeSourceDist args;
+  package = nodeEnv.buildNodePackage args;
+  shell = nodeEnv.buildNodeShell args;
+  nodeDependencies = nodeEnv.buildNodeDependencies (lib.overrideExisting args {
+    src = stdenv.mkDerivation {
+      name = args.name + "-package-json";
+      src = nix-gitignore.gitignoreSourcePure [
+        "*"
+        "!package.json"
+        "!package-lock.json"
+      ] args.src;
+      dontBuild = true;
+      installPhase = "mkdir -p $out; cp -r ./* $out;";
+    };
+  });
+}
diff --git a/src/apps/personal/asciinema/package.json b/src/apps/personal/asciinema/package.json
new file mode 100644
index 0000000..6c4a114
--- /dev/null
+++ b/src/apps/personal/asciinema/package.json
@@ -0,0 +1,9 @@
+{
+  "dependencies": {
+    "asciicast2gif": "^0.2.1"
+  },
+  "name": "asciicast2gif-nix",
+  "version": "1.0.0",
+  "main": "index.js",
+  "license": "MIT"
+}
diff --git a/src/apps/personal/timetracking.nix b/src/apps/personal/timetracking.nix
new file mode 100644
index 0000000..b7d0f2f
--- /dev/null
+++ b/src/apps/personal/timetracking.nix
@@ -0,0 +1,6 @@
+{ pkgs, ... }: {
+    home.packages = [
+        pkgs.gtimelog
+        pkgs.haskellPackages.arbtt
+    ];
+}
diff --git a/src/system.nix b/src/system.nix
index a93c78c..8d0c8a8 100644
--- a/src/system.nix
+++ b/src/system.nix
@@ -64,6 +64,11 @@
   services.zeronet.enable = true;
   services.zeronet.package = pkgs.zeronet-conservancy;
 
+  services.arbtt = {
+    enable = true;
+    sampleRate = 30;
+  };
+
   services = {
     syncthing = {
         enable = true;