# Compas installation on Rhino 8

**URL:** <https://forum.compas-framework.org/t/compas-installation-on-rhino-8/970>\
**Category:** compas\_rhino\
**Created:** [January 15, 2025, 10:25pm UTC](https://forum.compas-framework.org/t/compas-installation-on-rhino-8/970 "2025-01-15T22:25:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Phil](https://avatars.discourse-cdn.com/v4/letter/p/e95f7d/32.png) [@Phil](https://forum.compas-framework.org/u/Phil)\
**Post date:** [January 15, 2025, 10:25pm UTC](https://forum.compas-framework.org/t/compas-installation-on-rhino-8/970/1 "2025-01-15T22:25:39Z")

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Hello, I tried installing compas om Rhino 8 following the instructions provided using conda. When I run the command: python -m compas\_rhino.install  
I get the error message „ The default installation folder for rhino8 8.0 doesn’t exist.“  
I tried using „-v 8“ because I have Rhino 8 and Rhino 7 installed. I searched the forum for a solution but I didn’t find any regarding to Rhino 8.

Desperately I also tried reinstalling Rhino 8 and installing everything from scratch. But always same error.

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**Author:** ![chenkasirer](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.compas-framework.org/chenkasirer/32/549_2.png) [@chenkasirer](https://forum.compas-framework.org/u/chenkasirer)\
**Post date:** [January 16, 2025, 9:11am UTC](https://forum.compas-framework.org/t/compas-installation-on-rhino-8/970/2 "2025-01-16T09:11:41Z")

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Hi Phil,

To use COMPAS in Rhino8 please have a look at the following installation guide from our documentation: [Working in Rhino 8 (with CPython) — COMPAS](https://compas.dev/compas/latest/userguide/cad.rhino8.html)

Using the `# r` notation at the top of your script files allows Rhino8 to install it directly from PyPi.

```auto
#! python3
# r: compas

import compas
from compas.datastructures import Mesh

mesh = ...

```

The `-v8.0` flag of our installation script does not properly work and will be removed.

We are working on improving our support of Rhino8, specifically Grasshopper, and I’ll post updates as it advances.