Replace python-ldap with openldap in conda env

conda-environment-dev.yml

@@ -2,24 +2,28 @@
 ---
 
 name: mxcubecore
+
 channels:
   - conda-forge
+
 dependencies:
 
-  ### Runtime dependencies
+  # Runtime dependencies
+  # ====================
 
   - python >=3.8,<3.12
 
-  # We install `python-ldap` from conda because it is "hard" to install.
-  # On PyPI it is not available as *wheel*, only as *sdist* which requires to be built
-  # with compilation steps that require a compiler and some header files.
-  # Installing with conda is much "easier".
-  #
-  # IMPORTANT:
-  # Always make sure that `python-ldap` here is pinned to the same version
-  # as in the Poetry lockfile `poetry.lock` (not the other way around).
-  - python-ldap=3.4.3
-
-  ### Development dependencies
+
+  # Compilation-time dependencies
+  # =============================
+
+  # Adding `openldap` here allows Python's pip and Poetry to compile `python-ldap`.
+  # Indeed on PyPI, `python-ldap` is distributed as *sdist* only
+  # and it requires compilation before it can be installed.
+  - openldap
+
+
+  # Development dependencies
+  # ========================
 
   - poetry