(docs): addings some info on source installations

DEVELOPER.md

@@ -0,0 +1,22 @@
+# Some gotchas and things to keep in mind while developing
+
+## Installing from TestPyPI and PyPI
+
+Currently, we're testing from-source installation using TestPyPI [here][0].
+Unfortunately, there are some issues while installing from source, related to
+build dependencies not being found for some versions (specially setuptools).
+This happens if we use the following command:
+
+```shell
+# This command fails with an error on the build dependencies
+pip install -i https://test.pypi.org/simple/ math3d
+```
+
+To fix this issue when installing from source, use the `--no-build-isolation`
+option instead:
+
+```shell
+pip install --no-build-isolation -i https://test.pypi.org/simple/ math3d
+```
+
+[0]: <https://test.pypi.org/project/math3d/>