# Strange pip behavior **URL:** \ **Category:** Technical Help\ **Created:** [April 17, 2025, 3:39pm UTC](https://deeptalk.lambda.ai/t/strange-pip-behavior/4610 "2025-04-17T15:39:59Z")\ **Posts on this page:** 1\ **Showing post:** 1
**Author:** ![ThibaultSau](https://avatars.discourse-cdn.com/v4/letter/t/b5a626/32.png) [@ThibaultSau](https://deeptalk.lambda.ai/u/ThibaultSau)\ **Post date:** [April 17, 2025, 3:39pm UTC](https://deeptalk.lambda.ai/t/strange-pip-behavior/4610/1 "2025-04-17T15:39:59Z")
Hello, I’ve recently started using lamda server and for the most part it is great but I have problems using pip and virtualenvs. pip install -r requirements.txt is broken, and so is using it through pip-tools. For example on this repo ([GitHub - GaParmar/img2img-turbo: One-step image-to-image with Stable Diffusion turbo: sketch2image, day2night, and more](https://github.com/GaParmar/img2img-turbo)) on a fresh virtualenv after cloning, pip install -r requirements.txt generate an error : ERROR: Could not find a version that satisfies the requirement einops\>=0.6.1 (from versions: none) Installing this package manually with pip install ‘einops\>=0.6.1’ however works. Resuming the pip install-r … yields an error on the next package (in this case open-clip-torch), bu I can install it manually. I’ve had this behavior on several different repositories, including my own that I’m developing, using pip-tools. It can be somehow bypassed by installing each packages in the requirements.txt file manually but that just ignores the underlying issue. And lastly, when trying to install platipy ([GitHub - pyplati/platipy: Processing Library and Analysis Toolkit for Medical Imaging in Python](https://github.com/pyplati/platipy/tree/master)) I’ve been unable to bypass this issue because I’m simply not able to install vtk, whether I specify a version or not. I’ve checked on other machines and pip install vtk works as intended I do not believe the issue comes from me breaking a dependency somehow as I’ve made sure to only use venvs and done very limited setup on the server and I encountered this issue very early on. Thank you --- _[View the full topic](https://deeptalk.lambda.ai/t/strange-pip-behavior/4610)._