# Cannot install GraPhlAn

**URL:** <https://forum.biobakery.org/t/cannot-install-graphlan/4792>\
**Category:** GraPhlAn\
**Created:** [February 13, 2023, 12:45pm UTC](https://forum.biobakery.org/t/cannot-install-graphlan/4792 "2023-02-13T12:45:26Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![sasakitomiyano](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.biobakery.org/sasakitomiyano/32/1916_2.png) [@sasakitomiyano](https://forum.biobakery.org/u/sasakitomiyano)\
**Post date:** [February 13, 2023, 12:45pm UTC](https://forum.biobakery.org/t/cannot-install-graphlan/4792/1 "2023-02-13T12:45:26Z")

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I am having trouble trying to install GraPhlAn using ubuntu. I have already created a separate environment. I don’t understand why it cannot find matplotlib.

````auto
(graphlan) sasaki@LAPTOP-9GD:~$ mamba install -c bioconda -c biobakery -c conda-forge python=3.7 graphlan

Could not solve for environment specs
Encountered problems while solving:
  - nothing provides matplotlib 1.4* needed by graphlan-1.0.0-py27_0

The environment can't be solved, aborting the operation```
````

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<div class="post-metadata">

**Author:** ![sagunmaharjann](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.biobakery.org/sagunmaharjann/32/168_2.png) [@sagunmaharjann](https://forum.biobakery.org/u/sagunmaharjann)\
**Post date:** [February 13, 2023, 3:10pm UTC](https://forum.biobakery.org/t/cannot-install-graphlan/4792/2 "2023-02-13T15:10:28Z")

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Hi @sasakitomiyano ,

I think graphlan is not being able to find the right version of `matplotlib` for your install. Can you try the following commands to check your matplotlib version please?

```auto
import matplotlib
matplotlib. __version__

```

Also, can you try the following command for the matplotlib installation.

```auto
pip install matplotlib==1.4

```

Regards,  
Sagun

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<div class="post-metadata">

**Author:** ![sasakitomiyano](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.biobakery.org/sasakitomiyano/32/1916_2.png) [@sasakitomiyano](https://forum.biobakery.org/u/sasakitomiyano)\
**Post date:** [February 14, 2023, 12:49am UTC](https://forum.biobakery.org/t/cannot-install-graphlan/4792/3 "2023-02-14T00:49:06Z")

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Hello!

I was able to download GraPhlAn but I had to use conda (instead of mamba). Thank you for your help!