Issue installing Caldera. lxml 4.9.1 unable to create wheel

[Alen-Titus]

Hello, i have this error:

note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for lxml
Failed to build lxml
ERROR: Failed to build installable wheels for some pyproject.toml based projects (lxml)

Compile failed: command '/usr/bin/x86_64-linux-gnu-gcc' failed with exit code 1
creating tmp
cc -I/usr/include/libxml2 -I/usr/include/libxml2 -c /tmp/xmlXPathInitccexn737.c -o tmp/xmlXPathInitccexn737.o
cc tmp/xmlXPathInitccexn737.o -lxml2 -o a.out
error: command '/usr/bin/x86_64-linux-gnu-gcc' failed with exit code 1
[end of output]

[github-actions]

Looks like your first issue -- we aim to respond to issues as quickly as possible. In the meantime, check out our documentation here: http://caldera.readthedocs.io/

[leba-atr]

First guess would be that you're perhaps missing gcc. Please install the apt packages build-essentials and libxml2-dev (assuming you're using a debian-based OS) and then try running the Caldera setup again.

[c0pp3r]

Hey there, I ran into this same issue. I wouldn't call this a full fix but I was able to get around this by going into the requirements file and changing the lxml version to 5.3.0. After that, the installation proceeded. I tried @leba-atr 's steps but unfortunately those packages were already installed and updated.

This was on Kali Linux by the way.

[Alen-Titus]

Hey @c0pp3r , i was attempting the same on kali, but not to worry. uninstall the caldera directory and try this.
After you clone the repository,

cd Caldera/
create a local environment
install go lang 1.19+ version first and then,
pip3 install -r requirements.txt.
python3 server.py --insecure --build

This way the requirements wont affect your main files or tools.
Please let me know if you're facing further issues.
Thankyou

[uruwhy]

Closing since it looks like OP solved their issue

[Anon-Exploiter]

Ran into the same issue, fresh install of kali, the packages sudo apt-get install -y libxml2-dev libxslt-dev python3-dev are installed. Still fails with lxml.

I may try downgrading as suggested in #3139 (comment)

[Anon-Exploiter]

Sharing for anyone suffering on Kali Linux for future:

# Install deps
sudo apt-get install -y build-essential libssl-dev zlib1g-dev libbz2-dev \
    libreadline-dev libsqlite3-dev libncurses5-dev libffi-dev \
    liblzma-dev libgdbm-dev libnss3-dev curl git

# Install pyenv
curl -fsSL https://pyenv.run | bash

# Add to shell init
echo 'export PATH="$HOME/.pyenv/bin:$PATH"' >> ~/.zshrc
echo 'eval "$(pyenv init -)"' >> ~/.zshrc
echo 'eval "$(pyenv virtualenv-init -)"' >> ~/.zshrc
exec $SHELL

# Install Python 3.11
pyenv install 3.11.9
pyenv virtualenv 3.11.9 caldera-env
pyenv activate caldera-env
pip install -r requirements.txt

# Run caldera
python3 server.py --insecure --build