add a subsection for installation from conda-forge (#1740)

Summary: After existing for close to a year and considering the quality (IMO) of the collaboration since then, I believe it would be reasonable to also mention the conda-forge packages in `INSTALL.md`. WDYT mdouze beauby? Pull Request resolved: #1740 Reviewed By: mdouze Differential Revision: D26870699 Pulled By: beauby fbshipit-source-id: 17465cd5c9f138f041d394d61fccd086bcafc3c7
facebookresearch · Mar 8, 2021 · ee701b9 · ee701b9
1 parent 189aecb
commit ee701b9
Showing 1 changed file with 24 additions and 1 deletion.
diff --git a/INSTALL.md b/INSTALL.md
@@ -27,10 +27,33 @@ Nightly pre-release packages can be installed as follows:
 # CPU-only version
 $ conda install -c pytorch/label/nightly faiss-cpu
 
-# GPU(+CPU) versoin
+# GPU(+CPU) version
 $ conda install -c pytorch/label/nightly faiss-gpu
 ```
 
+## Installing from conda-forge
+
+Faiss is also being packaged by [conda-forge](https://conda-forge.org/), the
+community-driven packaging ecosystem for conda. The packaging effort is
+collaborating with the Faiss team to ensure high-quality package builds.
+
+Due to the comprehensive infrastructure of conda-forge, it may even happen that
+certain build combinations are supported in conda-forge that are not available
+through the pytorch channel. To install, use
+
+``` shell
+# CPU version
+$ conda install -c conda-forge faiss-cpu
+
+# GPU version
+$ conda install -c conda-forge faiss-gpu
+```
+
+You can tell which channel your conda packages come from by using `conda list`.
+If you are having problems using a package built by conda-forge, please raise
+an [issue](https://github.com/conda-forge/faiss-split-feedstock/issues) on the
+conda-forge package "feedstock".
+
 # Building from source
 
 Faiss can be built from source using CMake.