diff --git a/README.md b/README.md
index 02dbe53..ebfde60 100644
--- a/README.md
+++ b/README.md
@@ -2,8 +2,8 @@
 
 [![Dotfiles CI status badge](https://github.com/andrejusk/dotfiles/actions/workflows/ci.yml/badge.svg)](https://github.com/andrejusk/dotfiles/actions/workflows/ci.yml)
 
-My collection of dotfiles and install scripts
-to set up development environments
+A collection of dotfiles and install scripts
+to set up my development environment
 🛠️ 📂️ 🚀
 
 ## Usage
@@ -12,16 +12,6 @@ A local repository can be installed by running:
 
     ./script/install
 
-<details>
-<summary>
-Environment configuration for <code>install</code> script
-</summary>
-
-| Variable | Description |
-| --- | --- |
-| `LOG_TARGET` | File to log installation output to (default: `~/.dotfiles/logs/install-{date}.log`) |
-</details>
-
 ### Automated setup
 
 This repository can be installed without a local copy
@@ -32,18 +22,3 @@ by invoking the `setup` script directly via `curl`:
 
     # Run
     curl -s https://raw.githubusercontent.com/andrejusk/dotfiles/HEAD/script/setup | bash
-
-
-<details>
-<summary>
-Environment configuration for <code>setup</code> script
-</summary>
-
-| Variable | Description |
-| --- | --- |
-| `DOTFILES_DIR` | Directory to clone the repository into (default: `~/.dotfiles`)
-| `DOTFILES_SKIP_INSTALL` | Skip running the install script (default: `false`)
-| `GITHUB_AUTHOR` | GitHub username to use for cloning repositories (default: `andrejusk`) |
-| `GITHUB_REPO` | GitHub repository name to clone (default: `dotfiles`)
-| `GITHUB_BRANCH` | GitHub branch to clone (default: `master`)
-</details>
diff --git a/home/.zshrc b/home/.zshrc
index 9a3721f..cc8be21 100644
--- a/home/.zshrc
+++ b/home/.zshrc
@@ -18,6 +18,7 @@ plugins=(
     emoji
     git
     history
+    poetry
     zsh-autosuggestions
     zsh-syntax-highlighting
 )
@@ -25,3 +26,7 @@ source $ZSH/oh-my-zsh.sh
 
 # To customize prompt, run `p10k configure` or edit ~/.p10k.zsh.
 [[ ! -f ~/.p10k.zsh ]] || source ~/.p10k.zsh
+
+export NVM_DIR="$HOME/.nvm"
+[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm
+[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"  # This loads nvm bash_completion
diff --git a/script/install b/script/install
index 5322e51..6e254a4 100755
--- a/script/install
+++ b/script/install
@@ -5,17 +5,21 @@ set -eo pipefail
 # Script to run all install scripts contained in install.d
 #
 
-# Prevent running as root and check sudo access
+# Prevent running as root
 if [[ $EUID -eq 0 ]]; then
     echo "Failed: Running as sudo. Please run as user"
     exit 1
 fi
+
+# Ensure sudo credentials are cached
 sudo -v
 
+# Set up directory variables
 dir=$(dirname "$0")
 install_dir="$dir/install.d"
 export DOTFILES=$(dirname "$dir")
 
+# Set up log destination
 if [[ -z "$LOG_TARGET" ]]; then
     timestamp=$(date +%Y-%m-%dT%H:%M:%S)
     uuid=$(
@@ -29,7 +33,14 @@ if [[ -z "$LOG_TARGET" ]]; then
 else
     log_target="$LOG_TARGET"
 fi
+touch "$log_target"
+if [[ ! -f "$log_target" ]]; then
+    echo "Failed: Unable to create log file \"$log_target\""
+    exit 1
+fi
+log_abs_target=$(readlink -f "$log_target")
 
+# Run install scripts
 install() {
     echo "Running \"$(basename "$0")\" at \"$(date)\""
     echo "Running as \"$(whoami)\" on \"$(hostname)\""
@@ -42,8 +53,9 @@ install() {
         unset script_name
     done
 }
+echo "install: Logging to \"$log_abs_target\""
+install 2>&1 | tee "$log_abs_target"
 
-echo "install: Logging to \"$log_target\""
-install 2>&1 | tee "$log_target"
-
-unset uuid dir install_dir log_dir log_target
+# Clean up
+unset uuid dir install_dir log_dir log_abs_target log_target
+echo "Thank you!"
diff --git a/script/install.d/10-pyenv-pkglist b/script/install.d/10-pyenv-pkglist
deleted file mode 100644
index 6f13840..0000000
--- a/script/install.d/10-pyenv-pkglist
+++ /dev/null
@@ -1,15 +0,0 @@
-build-essential
-libssl-dev
-libbz2-dev
-libreadline-dev
-libsqlite3-dev
-libxml2-dev
-libxmlsec1-dev
-llvm
-libncurses5-dev
-libncursesw5-dev
-xz-utils
-tk-dev
-libffi-dev
-liblzma-dev
-zlib1g-dev
diff --git a/script/install.d/10-pyenv.sh b/script/install.d/10-pyenv.sh
index a457cc1..0ab4823 100644
--- a/script/install.d/10-pyenv.sh
+++ b/script/install.d/10-pyenv.sh
@@ -5,18 +5,35 @@
 #   Configure pyenv.
 #
 
-if ! bin_in_path "pyenv"; then
+if ! command -v "pyenv" &> /dev/null; then
     if [[ "$OSTYPE" == "linux-gnu"* ]]; then
         # see https://github.com/pyenv/pyenv/wiki/common-build-problems
-        pyenv_list_file="$INSTALL_DIR/10-pyenv-pkglist"
-        install_file "$pyenv_list_file"
+        ppyenv_packages=(
+            build-essential
+            libssl-dev
+            libbz2-dev
+            libreadline-dev
+            libsqlite3-dev
+            libxml2-dev
+            libxmlsec1-dev
+            llvm
+            libncurses5-dev
+            libncursesw5-dev
+            xz-utils
+            tk-dev
+            libffi-dev
+            liblzma-dev
+            zlib1g-dev
+        )
+        pyenv_packages=($(comm -13 <(printf "%s\n" "${pyenv_packages[@]}" | sort) <(dpkg --get-selections | awk '{print $1}' | sort)))
+        if [ ${#pyenv_packages[@]} -gt 0 ]; then
+            sudo apt-get install -qq "${pyenv_packages[@]}"
+        fi
 
         # see https://github.com/pyenv/pyenv-installer
-        download_run \
-            "https://github.com/pyenv/pyenv-installer/raw/master/bin/pyenv-installer" \
-            bash
-e
-        unset pyenv_list_file
+        bash -c "$(curl -fsSL https://github.com/pyenv/pyenv-installer/raw/master/bin/pyenv-installer)"
+
+        unset pyenv_packages
     elif [[ "$OSTYPE" == "darwin"* ]]; then
         brew install pyenv
         brew install pyenv-virtualenv
@@ -30,10 +47,9 @@ if [[ "$OSTYPE" == "linux-gnu"* ]]; then
             https://github.com/pyenv/pyenv-virtualenv.git \
             $virtualenv_path
     fi
+    unset virtualenv_path
 fi
 
 eval "$(pyenv init --path)"
 
-pyenv update
-
 pyenv --version
diff --git a/script/install.d/11-python.sh b/script/install.d/11-python.sh
index f10e650..938a5a2 100644
--- a/script/install.d/11-python.sh
+++ b/script/install.d/11-python.sh
@@ -7,16 +7,49 @@
 
 export PYTHON_KEYRING_BACKEND=keyring.backends.null.Keyring
 
-if ! bin_in_path "pip3"; then
-    pyenv install 3.9.0
-    pyenv global 3.9.0
+if ! command -v "pip3" &>/dev/null; then
+    pyenv install 3.12.1
+    pyenv global 3.12.1
 fi
 
-pip install --upgrade pip
-pip3 install --upgrade pip
+pip install --quiet --upgrade --user pip
+pip3 install --quiet --upgrade --user pip
 python3 --version
 pip3 --version
 
-for dep in $(jq -r ".pip_dependencies[]" $CONFIG); do
-    pip3 install --upgrade $dep
-done
+pip_dependencies=(
+    # docker-compose
+    # neovim
+    # "python-language-server[all]"
+    # pyvim
+)
+installed_packages=$(pip3 list --format=freeze | awk -F'==' '{print $1}')
+pip_dependencies=($(comm -13 <(printf "%s\n" "${installed_packages[@]}" | sort) <(printf "%s\n" "${pip_dependencies[@]}" | sort)))
+
+if [ ${#pip_dependencies[@]} -gt 0 ]; then
+    pip3 install --quiet --upgrade --user "${pip_dependencies[@]}"
+fi
+
+unset installed_packages pip_dependencies PYTHON_KEYRING_BACKEND
+
+if ! command -v "pipx" &>/dev/null; then
+    if [[ "$OSTYPE" == "linux-gnu"* ]]; then
+        sudo apt-get install -qq pipx
+    elif [[ "$OSTYPE" == "darwin"* ]]; then
+        brew install pipx
+    fi
+fi
+
+echo "pipx $(pipx --version)"
+
+if ! command -v "poetry" &>/dev/null; then
+    pipx install poetry
+fi
+
+poetry --version
+
+POETRY_PLUGIN="$ZSH/custom/plugins/poetry"
+if [ ! -d "$POETRY_PLUGIN" ]; then
+    mkdir -p $POETRY_PLUGIN
+    poetry completions zsh > $POETRY_PLUGIN/_poetry
+fi
diff --git a/script/install.d/12-node.sh b/script/install.d/12-node.sh
index 0286127..61bf692 100644
--- a/script/install.d/12-node.sh
+++ b/script/install.d/12-node.sh
@@ -5,29 +5,35 @@
 #   Configure Node.js.
 #
 
-nvm_version="0.39.7"
-if ! bin_in_path "nvm"; then
-    download_run "https://raw.githubusercontent.com/nvm-sh/nvm/v${nvm_version}/install.sh" \
-        "bash"
-fi
-
 NVM_DIR="$([ -z "${XDG_CONFIG_HOME-}" ] && printf %s "${HOME}/.nvm" || printf %s "${XDG_CONFIG_HOME}/nvm")"
 [ -s "$NVM_DIR/nvm.sh" ] && source "$NVM_DIR/nvm.sh"
 
+nvm_version="0.39.7"
+if ! command -v "nvm" &>/dev/null; then
+    bash -c "$(curl -fsSL https://raw.githubusercontent.com/nvm-sh/nvm/v${nvm_version}/install.sh)"
+    [ -s "$NVM_DIR/nvm.sh" ] && source "$NVM_DIR/nvm.sh"
+fi
+
 nvm --version
 nvm alias default lts/iron
 nvm install lts/iron
 nvm use lts/iron
 
-node --version
+echo "Node.js $(node --version)"
 
-yarn --version
+echo "npm $(npm --version)"
 
-if [[ "$OSTYPE" == "linux-gnu"* ]]; then
-    for dep in $(jq -r ".node_dependencies[]" $CONFIG); do
-        yarn global add $dep
-        yarn global upgrade $dep
-    done
+npm_dependencies=(
+    "firebase-tools"
+    "neovim"
+    "typescript-language-server"
+    "typescript"
+)
+
+npm_dependencies=($(comm -13 <(printf "%s\n" "${npm_dependencies[@]}" | sort) <(npm list -g --depth=0 --parseable | awk -F'/' '{print $NF}' | sort)))
+
+if [ ${#npm_dependencies[@]} -gt 0 ]; then
+    npm install -g "${npm_dependencies[@]}"
 fi
 
-unset nvm_version
+unset nvm_version npm_dependencies
diff --git a/script/install.d/21-gh_cli.sh b/script/install.d/21-gh_cli.sh
index 642e86f..e9b2ab0 100644
--- a/script/install.d/21-gh_cli.sh
+++ b/script/install.d/21-gh_cli.sh
@@ -1,4 +1,4 @@
-# /bin/bash
+#!/usr/bin/env bash
 
 # -----------------------------------------------------------------------------
 # Description:
diff --git a/script/install.d/25-terraform.sh b/script/install.d/25-terraform.sh
new file mode 100644
index 0000000..5640013
--- /dev/null
+++ b/script/install.d/25-terraform.sh
@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+# -----------------------------------------------------------------------------
+# Description:
+#   Install terraform.
+#
+
+if ! command -v "terraform" &>/dev/null; then
+    if [[ "$OSTYPE" == "linux-gnu"* ]]; then
+        sudo apt-get install -qq terraform
+    elif [[ "$OSTYPE" == "darwin"* ]]; then
+        brew tap hashicorp/tap
+        brew install hashicorp/tap/terraform
+    fi
+fi
diff --git a/script/install.d/30-iterm2.sh b/script/install.d/30-iterm2.sh
index 93efee3..52d4c12 100644
--- a/script/install.d/30-iterm2.sh
+++ b/script/install.d/30-iterm2.sh
@@ -6,7 +6,7 @@
 #
 
 if [[ "$OSTYPE" == "darwin"* ]]; then
-    if ! command -v iterm2 &> /dev/null; then
+    if ! brew list --cask iterm2 &>/dev/null; then
         brew install --cask iterm2
     fi
 fi
diff --git a/script/install.d/80-neofetch.sh b/script/install.d/80-neofetch.sh
new file mode 100644
index 0000000..8c9662e
--- /dev/null
+++ b/script/install.d/80-neofetch.sh
@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+# -----------------------------------------------------------------------------
+# Description:
+#   Install neofetch.
+#
+
+if ! command -v "neofetch" &>/dev/null; then
+    if [[ "$OSTYPE" == "linux-gnu"* ]]; then
+        sudo apt-get install -qq neofetch
+    elif [[ "$OSTYPE" == "darwin"* ]]; then
+        brew install neofetch
+    fi
+fi
diff --git a/script/install.d/99-screenfetch.sh b/script/install.d/99-screenfetch.sh
index 180fa04..912f0d1 100644
--- a/script/install.d/99-screenfetch.sh
+++ b/script/install.d/99-screenfetch.sh
@@ -5,4 +5,4 @@
 #   Print system information.
 #
 
-screenfetch
+neofetch
diff --git a/script/install_config.json b/script/install_config.json
index 98311ea..2db25d7 100644
--- a/script/install_config.json
+++ b/script/install_config.json
@@ -69,19 +69,5 @@
         "tmux",
         "unzip",
         "yarn"
-    ],
-    "node_dependencies": [
-        "firebase-tools",
-        "neovim",
-        "typescript-language-server",
-        "typescript"
-    ],
-    "pip_dependencies": [
-        "awscli",
-        "docker-compose",
-        "neovim",
-        "poetry",
-        "python-language-server[all]",
-        "pyvim"
     ]
 }
diff --git a/tests/.python-version b/tests/.python-version
index a5c4c76..171a6a9 100644
--- a/tests/.python-version
+++ b/tests/.python-version
@@ -1 +1 @@
-3.9.0
+3.12.1