Restore cache in circleCI (#3401)

* restore cache

* Trigger CI again to see if cache is hit

.circleci/config.yml

@@ -513,12 +513,17 @@ jobs:
           name: Generate cache key
           # This will refresh cache on Sundays, nightly build should generate new cache.
           command: echo "$(date +"%Y-%U")" > .circleci-weekly
+      - restore_cache:
+
+          keys:
+            - env-v3-linux-{{ arch }}-py<< parameters.python_version >>-{{ checksum ".circleci/unittest/linux/scripts/environment.yml" }}-{{ checksum ".circleci-weekly" }}
+
       - run:
           name: Setup
           command: docker run -e PYTHON_VERSION -t --gpus all -v $PWD:$PWD -w $PWD "${image_name}" .circleci/unittest/linux/scripts/setup_env.sh
       - save_cache:
 
-          key: env-v2-linux-{{ arch }}-py<< parameters.python_version >>-{{ checksum ".circleci/unittest/linux/scripts/environment.yml" }}-{{ checksum ".circleci-weekly" }}
+          key: env-v3-linux-{{ arch }}-py<< parameters.python_version >>-{{ checksum ".circleci/unittest/linux/scripts/environment.yml" }}-{{ checksum ".circleci-weekly" }}
 
           paths:
             - conda
@@ -587,6 +592,11 @@ jobs:
           name: Generate cache key
           # This will refresh cache on Sundays, nightly build should generate new cache.
           command: echo "$(date +"%Y-%U")" > .circleci-weekly
+      - restore_cache:
+
+          keys:
+            - env-v1-windows-{{ arch }}-py<< parameters.python_version >>-{{ checksum ".circleci/unittest/windows/scripts/environment.yml" }}-{{ checksum ".circleci-weekly" }}
+ 
       - run:
           name: Setup
           command: .circleci/unittest/windows/scripts/setup_env.sh

.circleci/config.yml.in

@@ -513,12 +513,17 @@ jobs:
           name: Generate cache key
           # This will refresh cache on Sundays, nightly build should generate new cache.
           command: echo "$(date +"%Y-%U")" > .circleci-weekly
+      - restore_cache:
+          {% raw %}
+          keys:
+            - env-v3-linux-{{ arch }}-py<< parameters.python_version >>-{{ checksum ".circleci/unittest/linux/scripts/environment.yml" }}-{{ checksum ".circleci-weekly" }}
+          {% endraw %}
       - run:
           name: Setup
           command: docker run -e PYTHON_VERSION -t --gpus all -v $PWD:$PWD -w $PWD "${image_name}" .circleci/unittest/linux/scripts/setup_env.sh
       - save_cache:
           {% raw %}
-          key: env-v2-linux-{{ arch }}-py<< parameters.python_version >>-{{ checksum ".circleci/unittest/linux/scripts/environment.yml" }}-{{ checksum ".circleci-weekly" }}
+          key: env-v3-linux-{{ arch }}-py<< parameters.python_version >>-{{ checksum ".circleci/unittest/linux/scripts/environment.yml" }}-{{ checksum ".circleci-weekly" }}
           {% endraw %}
           paths:
             - conda
@@ -587,6 +592,11 @@ jobs:
           name: Generate cache key
           # This will refresh cache on Sundays, nightly build should generate new cache.
           command: echo "$(date +"%Y-%U")" > .circleci-weekly
+      - restore_cache:
+          {% raw %}
+          keys:
+            - env-v1-windows-{{ arch }}-py<< parameters.python_version >>-{{ checksum ".circleci/unittest/windows/scripts/environment.yml" }}-{{ checksum ".circleci-weekly" }}
+          {% endraw %} 
       - run:
           name: Setup
           command: .circleci/unittest/windows/scripts/setup_env.sh