diff --git a/polybar/config b/polybar/config
index bc5ad7d..6df34fd 100644
--- a/polybar/config
+++ b/polybar/config
@@ -67,7 +67,7 @@ foreground = ${colors.foreground}
 padding-left = 0
 padding-right = 1
 
-font-0 = "Iosevka:size=12;2"
+font-0 = "JetBrainsMono:size=11;2"
 font-1 = "FontAwesome:size=10;2"
 font-2 = "FontAwesome:size=30;7"
 
@@ -167,8 +167,8 @@ content-background = ${colors.blue}
 
 [module/battery]
 type = internal/battery
-battery = BAT1
-adapter = ADP1
+battery = BAT0
+adapter = AC
 full-at = 98
 format-charging-background = ${colors.green}
 format-charging-foreground = ${colors.background}
diff --git a/rofi/config.rasi b/rofi/config.rasi
index b2035e5..8fdf10f 100644
--- a/rofi/config.rasi
+++ b/rofi/config.rasi
@@ -3,7 +3,7 @@ configuration {
 /*	width: 50;*/
 /*	lines: 15;*/
 /*	columns: 1;*/
-	font: "Iosevka 12";
+	font: "Jetbrains Mono 12";
 /*	bw: 1;*/
 /*	location: 0;*/
 /*	padding: 5;*/
diff --git a/scripts/hlwm-display-switch.sh b/scripts/hlwm-display-switch.sh
new file mode 100755
index 0000000..e2a4377
--- /dev/null
+++ b/scripts/hlwm-display-switch.sh
@@ -0,0 +1,40 @@
+#!/bin/sh
+
+extern_1="HDMI1"
+extern_2="DP1"
+intern="eDP1"
+polybar_top_padding=22
+
+switch_internal() {
+    xrandr --output "$extern_2" --off \
+	   --output "$extern_1" --off \
+	   --output "$intern" --auto --primary
+    herbstclient detect_monitors
+    herbstclient pad 0 "$polybar_top_padding"
+    ~/.fehbg &
+    xmodmap ~/.Xmodmap
+}
+
+switch_external() {
+    xrandr --output "$extern_2" --primary --auto \
+	   --output "$extern_1" --auto --left-of "$extern_2" \
+	   --output "$intern" --auto --right-of "$extern_2"
+    herbstclient detect_monitors
+    herbstclient pad 0 0
+    herbstclient pad 2 0
+    herbstclient pad 1 "$polybar_top_padding"
+    ~/.fehbg &
+    xmodmap ~/.Xmodmap
+}
+
+case "$1" in
+    i* )
+	switch_internal
+	;;
+    e* )
+	switch_external
+	;;
+    * )
+	echo "Specify new output configuration. Possibilities are: 'external' and 'internal'"
+	;;
+esac
diff --git a/shells/fish/conf.d/90-emacs-vterm.fish b/shells/fish/conf.d/90-emacs-vterm.fish
new file mode 100644
index 0000000..7f26825
--- /dev/null
+++ b/shells/fish/conf.d/90-emacs-vterm.fish
@@ -0,0 +1,40 @@
+function vterm_printf;
+    if [ -n "$TMUX" ]
+        # tell tmux to pass the escape sequences through
+        printf "\ePtmux;\e\e]%s\007\e\\" "$argv"
+    else if string match -q -- "screen*" "$TERM"
+        # GNU screen (screen, screen-256color, screen-256color-bce)
+        printf "\eP\e]%s\007\e\\" "$argv"
+    else
+        printf "\e]%s\e\\" "$argv"
+    end
+end
+
+function vterm_prompt_end;
+    vterm_printf '51;A'(whoami)'@'(hostname)':'(pwd)
+end
+functions --copy fish_prompt vterm_old_fish_prompt
+function fish_prompt --description 'Write out the prompt; do not replace this. Instead, put this at end of your file.'
+    # Remove the trailing newline from the original prompt. This is done
+    # using the string builtin from fish, but to make sure any escape codes
+    # are correctly interpreted, use %b for printf.
+    printf "%b" (string join "\n" (vterm_old_fish_prompt))
+    vterm_prompt_end
+end
+
+function vterm_cmd --description 'Run an Emacs command among the ones been defined in vterm-eval-cmds.'
+    set -l vterm_elisp ()
+    for arg in $argv
+        set -a vterm_elisp (printf '"%s" ' (string replace -a -r '([\\\\"])' '\\\\\\\\$1' $arg))
+    end
+    vterm_printf '51;E'(string join '' $vterm_elisp)
+end
+
+function find_file
+    set -q argv[1]; or set argv[1] "."
+    vterm_cmd find-file (realpath "$argv")
+end
+
+function say
+    vterm_cmd message "%s" "$argv"
+end
diff --git a/shells/fish/conf.d/nix-env.fish b/shells/fish/conf.d/nix-env.fish
new file mode 100644
index 0000000..809d786
--- /dev/null
+++ b/shells/fish/conf.d/nix-env.fish
@@ -0,0 +1,138 @@
+# Setup Nix
+
+# We need to distinguish between single-user and multi-user installs.
+# This is difficult because there's no official way to do this.
+# We could look for the presence of /nix/var/nix/daemon-socket/socket but this will fail if the
+# daemon hasn't started yet. /nix/var/nix/daemon-socket will exist if the daemon has ever run, but
+# I don't think there's any protection against accidentally running `nix-daemon` as a user.
+# We also can't just look for /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh because
+# older single-user installs used the default profile instead of a per-user profile.
+# We can still check for it first, because all multi-user installs should have it, and so if it's
+# not present that's a pretty big indicator that this is a single-user install. If it does exist,
+# we still need to verify the install type. To that end we'll look for a root owner and sticky bit
+# on /nix/store. Multi-user installs set both, single-user installs don't. It's certainly possible
+# someone could do a single-user install as root and then manually set the sticky bit but that
+# would be extremely unusual.
+
+set -l nix_profile_path /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh
+set -l single_user_profile_path ~/.nix-profile/etc/profile.d/nix.sh
+if test -e $nix_profile_path
+  # The path exists. Double-check that this is a multi-user install.
+  # We can't just check for ~/.nix-profile/… because this may be a single-user install running as
+  # the wrong user.
+
+  # stat is not portable. Splitting the output of ls -nd is reliable on most platforms.
+  set -l owner (string split -n ' ' (/bin/ls -nd /nix/store 2>/dev/null))[3]
+  if not test -k /nix/store -a $owner -eq 0
+    # /nix/store is either not owned by root or not sticky. Assume single-user.
+    set nix_profile_path $single_user_profile_path
+  end
+else
+  # The path doesn't exist. Assume single-user
+  set nix_profile_path $single_user_profile_path
+end
+
+if test -e $nix_profile_path
+  # Source the nix setup script
+  # We're going to run the regular Nix profile under bash and then print out a few variables
+  for line in (env -u BASH_ENV bash -c '. "$0"; for name in PATH "${!NIX_@}"; do printf "%s=%s\0" "$name" "${!name}"; done' $nix_profile_path | string split0)
+    set -xg (string split -m 1 = $line)
+  end
+
+  # Insert Nix's fish share directories into fish's special variables.
+  # nixpkgs-installed fish tries to set these up already if NIX_PROFILES is defined, which won't
+  # be the case when sourcing $__fish_data_dir/share/config.fish normally, but might be for a
+  # recursive invocation. To guard against that, we'll only insert paths that don't already exit.
+  # Furthermore, for the vendor_conf.d sourcing, we'll use the pre-existing presence of a path in
+  # $fish_function_path to determine whether we want to source the relevant vendor_conf.d folder.
+
+  # To start, let's locally define NIX_PROFILES if it doesn't already exist.
+  set -al NIX_PROFILES
+  if test (count $NIX_PROFILES) -eq 0
+    set -a NIX_PROFILES $HOME/.nix-profile
+  end
+  # Replicate the logic from nixpkgs version of $__fish_data_dir/__fish_build_paths.fish.
+  set -l __nix_profile_paths (string split ' ' -- $NIX_PROFILES)[-1..1]
+  set -l __extra_completionsdir \
+    $__nix_profile_paths/etc/fish/completions \
+    $__nix_profile_paths/share/fish/vendor_completions.d
+  set -l __extra_functionsdir \
+    $__nix_profile_paths/etc/fish/functions \
+    $__nix_profile_paths/share/fish/vendor_functions.d
+  set -l __extra_confdir \
+    $__nix_profile_paths/etc/fish/conf.d \
+    $__nix_profile_paths/share/fish/vendor_conf.d \
+
+  ### Configure fish_function_path ###
+  # Remove any of our extra paths that may already exist.
+  # Record the equivalent __extra_confdir path for any function path that exists.
+  set -l existing_conf_paths
+  for path in $__extra_functionsdir
+    if set -l idx (contains --index -- $path $fish_function_path)
+      set -e fish_function_path[$idx]
+      set -a existing_conf_paths $__extra_confdir[(contains --index -- $path $__extra_functionsdir)]
+    end
+  end
+  # Insert the paths before $__fish_data_dir.
+  if set -l idx (contains --index -- $__fish_data_dir/functions $fish_function_path)
+    # Fish has no way to simply insert into the middle of an array.
+    set -l new_path $fish_function_path[1..$idx]
+    set -e new_path[$idx]
+    set -a new_path $__extra_functionsdir
+    set fish_function_path $new_path $fish_function_path[$idx..-1]
+  else
+    set -a fish_function_path $__extra_functionsdir
+  end
+
+  ### Configure fish_complete_path ###
+  # Remove any of our extra paths that may already exist.
+  for path in $__extra_completionsdir
+    if set -l idx (contains --index -- $path $fish_complete_path)
+      set -e fish_complete_path[$idx]
+    end
+  end
+  # Insert the paths before $__fish_data_dir.
+  if set -l idx (contains --index -- $__fish_data_dir/completions $fish_complete_path)
+    set -l new_path $fish_complete_path[1..$idx]
+    set -e new_path[$idx]
+    set -a new_path $__extra_completionsdir
+    set fish_complete_path $new_path $fish_complete_path[$idx..-1]
+  else
+    set -a fish_complete_path $__extra_completionsdir
+  end
+
+  ### Source conf directories ###
+  # The built-in directories were already sourced during shell initialization.
+  # Any __extra_confdir that came from $__fish_data_dir/__fish_build_paths.fish was also sourced.
+  # As explained above, we're using the presence of pre-existing paths in $fish_function_path as a
+  # signal that the corresponding conf dir has also already been sourced.
+  # In order to simulate this, we'll run through the same algorithm as found in
+  # $__fish_data_dir/config.fish except we'll avoid sourcing the file if it comes from an
+  # already-sourced location.
+  # Caveats:
+  # * Files will be sourced in a different order than we'd ideally do (because we're coming in
+  #   after the fact to source them).
+  # * If there are existing extra conf paths, files in them may have been sourced that should have
+  #   been suppressed by paths we're inserting in front.
+  # * Similarly any files in $__fish_data_dir/vendor_conf.d that should have been suppressed won't
+  #   have been.
+  set -l sourcelist
+  for file in $__fish_config_dir/conf.d/*.fish $__fish_sysconf_dir/conf.d/*.fish
+    # We know these paths were sourced already. Just record them.
+    set -l basename (string replace -r '^.*/' '' -- $file)
+    contains -- $basename $sourcelist
+    or set -a sourcelist $basename
+  end
+  for root in $__extra_confdir
+    for file in $root/*.fish
+      set -l basename (string replace -r '^.*/' '' -- $file)
+      contains -- $basename $sourcelist
+      and continue
+      set -a sourcelist $basename
+      contains -- $root $existing_conf_paths
+      and continue # this is a pre-existing path, it will have been sourced already
+      [ -f $file -a -r $file ]
+      and source $file
+    end
+  end
+end
diff --git a/shells/zshrc b/shells/zshrc
index 15bdf58..50edb4a 100644
--- a/shells/zshrc
+++ b/shells/zshrc
@@ -11,10 +11,10 @@ else
 fi
 
 # Set path to oh-my-zsh installation.
-if [[ "$DEFAULT_USER" == "ftu15" ]]; then
+if [[ "$USER" == "ftu15" ]]; then
     export ZSH=/users/student1/ftu15/.oh-my-zsh
 else
-    export ZSH=/home/mmk2410/.oh-my-zsh
+    export ZSH=/home/$USER/.oh-my-zsh
 fi
 
 # Set name of the theme to load.
@@ -65,12 +65,12 @@ HIST_STAMPS="dd/mm/yyyy"
 # Custom plugins may be added to ~/.oh-my-zsh/custom/plugins/
 # Example format: plugins=(rails git textmate ruby lighthouse)
 # Add wisely, as too many plugins slow down shell startup.
-plugins=(git adb battery bower coffee command-not-found debian gitignore github git-prompt gnu-utils node npm python terminator web-search)
+plugins=(git adb battery bower coffee command-not-found debian gitignore github git-prompt gnu-utils node npm python web-search)
 
 # User configuration
 
 # If on kiz, add user path
-if [[ "$DEFAULT_USER" == "ftu15" ]]; then
+if [[ "$USER" == "ftu15" ]]; then
     export PATH="/users/student1/ftu15/bin:$PATH"
 fi
 
@@ -83,7 +83,8 @@ source $ZSH/oh-my-zsh.sh
 
 # Preferred editor for local and remote sessions
 # if [[ -n $SSH_CONNECTION ]]; then
-export EDITOR='vim'
+export EDITOR='es'
+export VISUAL='es'
 # else
 #   export EDITOR='mvim'
 # fi
diff --git a/x/xprofile b/x/xprofile
new file mode 100755
index 0000000..cdf44f8
--- /dev/null
+++ b/x/xprofile
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+######################################
+### Additional X Environment variables
+######################################
+
+export QT_QPA_PLATFORMTHEME=qt5ct
+
+##################################
+### Adjust for multi-monitor setup
+##################################
+
+extern="HDMI-1"
+intern="eDP-1"
+
+if xrandr | grep "$extern connected"; then
+    xrandr --output "$extern" --auto --primary --left-of "$intern"
+fi