Dumbify variables a bit and take some hints from finally discovered documentation on boolean functions.

hosts

@@ -7,5 +7,5 @@ dell-laptop
 usb
 
 [miner]
-usb  driver=[amdgpu] miner=[]
-x570 driver=[amdgpu] miner=[nanominer,test] nanominer_config={"cpu":"xmr","gpu":"eth","gpus":[1,2,3]}
+usb  amdgpu
+x570 amdgpu nanominer nanominer_cpu=xmr nanominer_gpu=eth nanominer_gpus=1

local.yml

@@ -82,19 +82,19 @@
     ### CPU SECTION ###
     # Monero #
     - include: tasks/miner/software/xmr-stak-cpu.yml
-      when: '"xmr_stak_cpu" in miner'
+      when: xmr_stak_cpu is defined
 
     ### GPU Section ###
     ## Drivers ##
     - include: tasks/miner/drivers/amdgpu.yml
-      when: ansible_distribution == "Ubuntu" and "amdgpu" in driver
+      when: ansible_distribution == "Ubuntu" and amdgpu is defined
 
     # Ethereum #
     - include: tasks/miner/software/ethminer.yml
-      when: '"ethminer" in miner'
+      when: ethminer is defined
 
-    - include: tasks/miner/software/ethminer.yml
-      when: '"nanominer" in miner'
+    - include: tasks/miner/software/nanominer.yml
+      when: nanominer is defined
 
   # Scheduling
   post_tasks:

tasks/miner/cron/ansible.yml

@@ -4,9 +4,9 @@
 - name: Miner | Account Management | Cron | Miner Names
   set_fact:
     miners:
-    - { "name": "xmr_stak_cpu", "enabled": ("xmr_stak_cpu" in miner) }
-    - { "name": "ethminer",     "enabled": ("ethminer" in miner) }
-    #- { "name": "nanominer",    "enabled": ("nanominer" in miner) }
+    - { "name": "xmr_stak_cpu", "enabled": {{(xmr_stak_cpu is defined)}} }
+    - { "name": "ethminer",     "enabled": {{(ethminer is defined)}} }
+    #- { "name": "nanominer",    "enabled": (nanominer is defined) }
   
 
 - name: Miner | Account Management | Cron | Stop Jobs

tasks/miner/debug.yml

@@ -5,6 +5,8 @@
   debug:
     var: "{{ item }}"
   loop:
-    - driver
-    - miner
-    - nanominer_config
+    - amdgpu
+    - nanominer
+    - nanominer_cpu
+    - nanominer_gpu
+    - nanominer_gpus

tasks/miner/software/nanominer.yml

@@ -1,5 +1,7 @@
 ---
 # Nanominer from nanopool.org
+# Good documentation that might help with how to do variables.
+# https://docs.ansible.com/ansible/latest/user_guide/playbooks_tests.html
 
 ## Install ##
 
@@ -9,12 +11,12 @@
 - name: Miner | Software | nanominer | Mine with CPU (Optional)
   debug:
     var: nanominer_config.cpu
-  when: nanominer_config.cpu is defined
+  when: nanominer_cpu is defined
 
 - name: Miner | Software | nanominer | Mine with GPU (Optional)
   debug:
     var: nanominer_config.gpu
-  when: nanominer_config.gpu is defined
+  when: nanominer_gpu is defined
 
 #- name: Miner | Software | nanominer | Mine with GPU (Optional)
 #  blockinfile:
@@ -25,11 +27,10 @@
 #    state: present
 #    create: yes
 #    backup: yes
-#  loop: "{{ nanominer_config.gpu }}"
-#  when: nanominer_config.gpu is defined
+#  when: nanominer_gpu is defined
 
 - name: Miner | Software | nanominer | Choose GPUS (Optional)
   debug:
     var: "{{ item }}"
   loop: "{{ nanominer_config.gpus }}"
-  when: nanominer_config.gpus is defined
+  when: nanominer_gpus is defined