fix conda deps, try to fix readthedocs builds

.readthedocs.yml

@@ -4,6 +4,9 @@ build:
   os: "ubuntu-22.04"
   tools:
     python: "mambaforge-22.9"
+  jobs:
+    pre_install:
+      - bash ci/build_docs_pre_install.sh
 
 python:
   install:

ci/build_docs_pre_install.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+# Copyright (c) 2024 NVIDIA CORPORATION.
+#
+# [description]
+#
+#   ucx-py's docs builds require installing the library.
+#
+#   It does that by running 'pip install .' from the root of the repo. This script
+#   is used to modify readthedocs' local checkout of this project's source code prior
+#   to that 'pip install' being run.
+#
+#   For more, see https://docs.readthedocs.io/en/stable/build-customization.html
+#
+#   NOTE: This can go away if/when this project is cut over to rapids-build-backend.
+#         See https://github.com/rapidsai/build-planning/issues/31
+#
+
+set -euo pipefail
+
+# just remove libucx dependency from pyproject.toml... it's not necessary for docs builds,
+# and it's unsuffixed (e.g. no `-cu12`) in source control
+cat ./pyproject.toml | grep -v '"libucx' > pyproject.bak
+mv ./pyproject.bak ./pyproject.toml

conda/recipes/ucx-py/meta.yaml

@@ -30,7 +30,8 @@ requirements:
     - python
     - pip
     - ucx
-    {% for r in data.get("build-system", {}).get("requires", []) %}
+    # 'libucx' wheel dependency is unnecessary... the 'ucx' conda-forge package is used here instead
+    {% for r in data.get("build-system", {}).get("requires", []) if not r.startswith("libucx") %}
     - {{ r }}
     {% endfor %}
   run: