Add README and LICENSE

README

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+# eve-psr-nix0
+
+This repository holds the configuration for my primary home server. 
+This README exists to document solutions used or implemented with Nix.
+
+---
+
+## cheatsheet
+
+### Use the developer shell without pulling down the repository:
+```
+$> nix develop git+https://git.eversole.co/eve-psr-nix0
+$nix> # Success!
+```
+
+The rest of the cheatsheet assumes you have already cloned the repository and entered the developer shell: 
+```
+$> git clone https://git.eversole.co/eve-psr-nix0
+$> cd eve-psr-nix0
+$> nix develop
+$nix> # Success! Now we have our development dependencies.
+````
+
+### Use the developer shell alias to remotely build and deploy the configuration to eve-psr-nix0:
+```
+$nix> deploy 
+$nix> # That's it! Check the shellHook in outputs.devShell.x86_64-linux for more details.
+```
+
+### Format .nix source files:
+```
+$nix> nix fmt *.nix
+```
+
+### Create a new agenix secret:
+```
+# Add a new key to the secrets.nix attribute set
+$nix> $EDITOR secrets.nix 
+# Replace $SECRET_PATH with the actual 'secrets/$SECRET_NAME.age' path to edit the secrets file
+$nix> agenix -e $SECRET_PATH 
+# Redeploy; the secret will now be available in /run/agenix/$SECRET_NAME on the target host
+$nix> deploy 
+```
+
+### Add a new agenix secret recipient:
+```
+# Add a named variable in the let binding; associate it in the "publicKeys" list of applicable secrets
+$nix> #EDITOR secrets.nix
+# Redeploy
+$nix> deploy
+```
+
+## agenix
+
+agenix ( https://github.com/ryantm/agenix ) is utilized by this project for 
+secret management, allowing us to include sensitive environment information
+or other secrets that the deployment target may need. The files are included
+directly in the nix store, but they are encrypted via/to ed25519 SSH keys
+and are then decrypted on the target host.
+
+## license and copyright
+
+Copyright James Eversole
+Refer to LICENSE file for ISC license details