Removed pinned versions from conda environments

Author: humitos

docs/conda.rst

@@ -25,9 +25,8 @@ You can enable it by creating a `readthedocs.yml` file in the root of your repos
 This Conda environment will also have Sphinx and other build time dependencies installed.
 It will use the same order of operations that we support currently:
 
-* Environment Creation (``conda create``)
+* Environment Creation (``conda env create``)
 * Dependency Installation (Sphinx)
-* User Package Installation (``conda env update``)
 
 Custom Installs
 ---------------

readthedocs/doc_builder/python_environments.py

@@ -192,13 +192,11 @@ def install_core_requirements(self):
 
         # Use conda for requirements it packages
         requirements = [
-            'sphinx==1.3.5',
-            'Pygments==2.2.0',
-            'docutils==0.12',
+            'sphinx',
             'mock',
-            'pillow>=3.0.0',
-            'sphinx_rtd_theme==0.1.7',
-            'alabaster>=0.7,<0.8,!=0.7.5',
+            'pillow',
+            'sphinx_rtd_theme',
+            'mkdocs',
         ]
 
         cmd = [
@@ -215,10 +213,8 @@ def install_core_requirements(self):
 
         # Install pip-only things.
         pip_requirements = [
-            'mkdocs==0.15.0',
-            'readthedocs-sphinx-ext<0.6',
-            'commonmark==0.5.4',
-            'recommonmark==0.1.1',
+            'readthedocs-sphinx-ext',
+            'recommonmark',
         ]
 
         pip_cmd = [
@@ -236,12 +232,6 @@ def install_core_requirements(self):
         )
 
     def install_user_requirements(self):
-        self.build_env.run(
-            'conda',
-            'env',
-            'update',
-            '--name',
-            self.version.slug,
-            '--file',
-            self.config.conda_file,
-        )
+        # as the conda environment was created by using the ``environment.yml``
+        # defined by the user, there is nothing to update at this point
+        pass