diff --git a/modules/archive/functions/unarchive b/modules/archive/functions/unarchive
index d66fef8..3e58b86 100644
--- a/modules/archive/functions/unarchive
+++ b/modules/archive/functions/unarchive
@@ -41,7 +41,7 @@ else
 fi
 
 if (( $+commands[pixz] )); then
-  _xz_bin='pixz'
+  _xz_bin='pixz -d'
 else
   _xz_bin='xz'
 fi
diff --git a/modules/command-not-found/init.zsh b/modules/command-not-found/init.zsh
index d81692d..cf8f64e 100644
--- a/modules/command-not-found/init.zsh
+++ b/modules/command-not-found/init.zsh
@@ -7,14 +7,14 @@
 #
 
 # Load command-not-found on Debian-based distributions.
-if [[ -s '/etc/zsh_command_not_found' ]]; then
-  source '/etc/zsh_command_not_found'
+if [[ -s /etc/zsh_command_not_found ]]; then
+  source /etc/zsh_command_not_found
 # Load command-not-found on Arch Linux-based distributions.
-elif [[ -s '/usr/share/doc/pkgfile/command-not-found.zsh' ]]; then
-  source '/usr/share/doc/pkgfile/command-not-found.zsh'
+elif [[ -s /usr/share/doc/pkgfile/command-not-found.zsh ]]; then
+  source /usr/share/doc/pkgfile/command-not-found.zsh
 # Load command-not-found on macOS when Homebrew tap is configured.
 elif (( $+commands[brew] )) \
-      && [[ -s "${hb_cnf_handler::="$(brew --repository 2> /dev/null)"/Library/Taps/homebrew/homebrew-command-not-found/handler.sh}" ]]; then
+      && [[ -s ${hb_cnf_handler::="${HOMEBREW_REPOSITORY:-$commands[brew]:A:h:h}/Library/Taps/homebrew/homebrew-command-not-found/handler.sh"} ]]; then
   source "$hb_cnf_handler"
   unset hb_cnf_handler
 # Return if requirements are not found.
diff --git a/modules/completion/init.zsh b/modules/completion/init.zsh
index fc5cfd4..9ba9563 100644
--- a/modules/completion/init.zsh
+++ b/modules/completion/init.zsh
@@ -14,12 +14,16 @@ fi
 # Add zsh-completions to $fpath.
 fpath=(${0:h}/external/src $fpath)
 
-# Add completion for keg-only brewed curl when available.
-if (( $+commands[brew] )) \
-      && [[ -d "${curl_prefix::="$(brew --prefix 2> /dev/null)"/opt/curl}" ]]; then
-  fpath=($curl_prefix/share/zsh/site-functions $fpath)
+# Add completion for keg-only brewed curl on macOS when available.
+if (( $+commands[brew] )); then
+  brew_prefix=${HOMEBREW_PREFIX:-${HOMEBREW_REPOSITORY:-$commands[brew]:A:h:h}}
+  # $HOMEBREW_PREFIX defaults to $HOMEBREW_REPOSITORY but is explicitly set to
+  # /usr/local when $HOMEBREW_REPOSITORY is /usr/local/Homebrew.
+  # https://github.com/Homebrew/brew/blob/2a850e02d8f2dedcad7164c2f4b95d340a7200bb/bin/brew#L66-L69
+  [[ $brew_prefix == '/usr/local/Homebrew' ]] && brew_prefix=$brew_prefix:h
+  fpath=($brew_prefix/opt/curl/share/zsh/site-functions(/N) $fpath)
+  unset brew_prefix
 fi
-unset curl_prefix
 
 #
 # Options
diff --git a/modules/history/README.md b/modules/history/README.md
index 3806096..25e429d 100644
--- a/modules/history/README.md
+++ b/modules/history/README.md
@@ -38,6 +38,35 @@ Alternately, you can set `HISTFILE` manually to _`${ZDOTDIR:-$HOME}/.zhistory`_.
 
 - `history-stat` lists the ten most used commands
 
+## Settings
+
+### histfile
+
+Can be configured either by setting HISTFILE manually before loading this
+module or by using zstyle:
+
+```sh
+zstyle ':prezto:module:history' histfile "<file_name>"
+```
+
+defaults to "${ZDOTDIR:-$HOME}/.zsh_history".
+
+## histsize
+
+```sh
+zstyle ':prezto:module:history' histsize <number>
+```
+
+defaults to 10000.
+
+## savehist
+
+```sh
+zstyle ':prezto:module:history' savehist <number>
+```
+
+defaults to histsize
+
 ## Authors
 
 _The authors of this module should be contacted via the [issue tracker][2]._
diff --git a/modules/history/init.zsh b/modules/history/init.zsh
index 3f815c0..1f9a09b 100644
--- a/modules/history/init.zsh
+++ b/modules/history/init.zsh
@@ -26,9 +26,13 @@ setopt HIST_BEEP                 # Beep when accessing non-existent history.
 # Variables
 #
 
-HISTFILE="${HISTFILE:-${ZDOTDIR:-$HOME}/.zsh_history}"  # The path to the history file.
-HISTSIZE=10000                   # The maximum number of events to save in the internal history.
-SAVEHIST=10000                   # The maximum number of events to save in the history file.
+zstyle -s ':prezto:module:history' histfile '_pmh_histfile' || _pmh_histfile="${HISTFILE:-${ZDOTDIR:-$HOME}/.zsh_history}"
+zstyle -s ':prezto:module:history' histsize '_pmh_histsize' || _pmh_histsize=10000
+zstyle -s ':prezto:module:history' savehist '_pmh_savehist' || _pmh_savehist=${_pmh_histsize}
+HISTFILE="${_pmh_histfile}"  # The path to the history file.
+HISTSIZE="${_pmh_histsize}"  # The maximum number of events to save in the internal history.
+SAVEHIST="${_pmh_savehist}"  # The maximum number of events to save in the history file.
+unset _pmh_{hist{file,size},savehist}
 
 #
 # Aliases
diff --git a/runcoms/zpreztorc b/runcoms/zpreztorc
index cc6ebb4..ae68a89 100644
--- a/runcoms/zpreztorc
+++ b/runcoms/zpreztorc
@@ -83,6 +83,19 @@ zstyle ':prezto:module:editor' key-bindings 'emacs'
 # Set the command prefix on non-GNU systems.
 # zstyle ':prezto:module:gnu-utility' prefix 'g'
 
+#
+# History
+#
+
+# Set the file to save the history in when an interactive shell exits.
+# zstyle ':prezto:module:history' histfile "${ZDOTDIR:-$HOME}/.zsh_history"
+
+# Set the maximum  number  of  events  stored  in  the  internal history list.
+# zstyle ':prezto:module:history' histsize 10000
+
+# Set the maximum number of history events to save in the history file.
+# zstyle ':prezto:module:history' savehist 10000
+
 #
 # History Substring Search
 #
diff --git a/runcoms/zprofile b/runcoms/zprofile
index 5b8b638..d2acd31 100644
--- a/runcoms/zprofile
+++ b/runcoms/zprofile
@@ -49,7 +49,9 @@ typeset -gU cdpath fpath mailpath path
 
 # Set the list of directories that Zsh searches for programs.
 path=(
-  /usr/local/{bin,sbin}
+  $HOME/{,s}bin(N)
+  /opt/{homebrew,local}/{,s}bin(N)
+  /usr/local/{,s}bin(N)
   $path
 )