conda: Add tasks that install additional packages inside a conda environment. Add python-env as role dependency.

conda/defaults/main.yml

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+---
+# http://conda.pydata.org/miniconda.html
+conda_ver: 2
+conda_installer_file: 'Miniconda{{ conda_ver }}-latest-Linux-x86_64.sh'
+conda_url: 'https://repo.continuum.io/miniconda/{{ conda_installer_file }}'
+conda_install_prefix: '/srv/conda{{ conda_ver }}'
+# Change it to an unprivileged user
+conda_user: root
+
+#conda_environments:
+#  - { name: '', opts: '' }
+
+#conda_env_pkgs:
+#  - { conda_prefix: '{{ conda_install_prefix }}', pkg: '', repo_list: '' }
+

conda/meta/main.yml

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+---
+dependencies:
+  - role: '../../library/roles/python-env'

conda/tasks/main.yml

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+---
+- block:
+    - name: Find the user home directory path
+      getent: database=passwd key={{ conda_user }} split=":"
+      
+    - name: Create a downloads directory if does not exist
+      file: dest={{ getent_passwd[conda_user][4] }}/downloads state=directory
+
+    - name: Download the conda installer
+      get_url: url={{ conda_url }} dest={{ getent_passwd[conda_user][4] }}/downloads mode=0744
+
+    - name: Run the conda installer
+      command: '{{ getent_passwd[conda_user][4] }}/downloads/{{ conda_installer_file }} -f -b -p {{ conda_install_prefix }}'
+      args:
+        creates: '{{ conda_install_prefix }}/bin/conda'
+
+  become: True
+  become_user: '{{ conda_user }}'
+  tags: [ 'python', 'conda' ]
+
+- block:
+    - name: Create a conda environment
+      shell: export PATH={{ conda_install_prefix }}/bin:{{ ansible_env.PATH }} ; conda create -y -n {{ item.name }} {{ item.opts }}
+      environment:
+        PATH: 'PATH={{ conda_install_prefix }}/bin:{{ ansible_env.PATH }}'
+      args:
+        creates: '{{ conda_install_prefix }}/envs/{{ item.name }}'
+      with_items: '{{ conda_environments }}'
+
+    - name: Install additional packages and libraries inside the conda environment
+      shell: export PATH={{ conda_install_prefix }}/bin:{{ ansible_env.PATH }} ; conda install -y {{ item.repo_list }} {{ item.pkg }} ; touch {{ conda_install_prefix }}/.{{ item.pkg }}
+      environment:
+        PATH: 'PATH={{ conda_install_prefix }}/bin:{{ ansible_env.PATH }}'
+      args:
+        creates: '{{ conda_install_prefix }}/.{{ item.pkg }}'
+      with_items: '{{ conda_env_pkgs }}'
+      when: conda_env_pkgs is defined
+
+  become: True
+  become_user: '{{ conda_user }}'
+  when: conda_environments is defined
+  tags: [ 'python', 'conda', 'conda_env' ]

conda/vars/main.yml

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+---
+py_env_install: True