Error installing code

[fontiela]

during installation I get following error:

Collecting package metadata (repodata.json): done Solving environment: failed

ResolvePackageNotFound:

• libxml2==2.9.0=0
• llvm==3.3=0
• libxslt==1.1.28=0
• llvmpy==0.12.4=py27_0
• matplotlib==2.0.2=np110py27_0
• conda-forge::lxml==3.3.5=py27_0

when I PIP those packages I got several conflicts.