! LaTeX Error: File filename .sty not found

In case you get this kind of compile error, please make first sure that it does not occur on a fresh clone. If the fresh clone compiles it is likely to be due to your changes in the code.

If it occurs in the fresh clone, it is likely that you are missing the .sty package as part of the TeXLive distribution. You need to find the TexLive package, that includes this sty.

An easy approach on Linux-distributions is to use the package manager's search functionality or tools like synaptic to get the right package.

Example

! LaTeX Error: File `xifthen.sty' not found

Let's search it via apt:

$ sudo apt update
$ sudo apt-cache search xifthen

it will return the following result:

texlive-latex-extra - TeX Live: LaTeX additional packages

which in turn is a clear match. You can simply install the package and you are good to go.

$ sudo apt install texlive-latex-extra

The compilation error should now be resolved

Related: https://github.com/jankapunkt/latexcv/issues/36