store and profile

presentation.md

@@ -39,6 +39,7 @@ While we will try to talk about generalities of declarative operating system par
 
 - Systems have a given configuration
 - Configuration can duplicate systems
+- Everything is isolated
 
 ---
 
@@ -46,4 +47,116 @@ While we will try to talk about generalities of declarative operating system par
 
 ![w:25em](diagram.png)
 
----
+---
+
+# Isolation
+
+- Packages are built in isolated packages
+- No random spare files in file system
+- All state is containted
+    - Preserves state-less root
+
+--- 
+
+# Stability
+
+- Reproducibility and Isolation ensure the ability to rollback
+- Always have some working system state
+
+---
+
+# NixOS
+
+- Released Jun 2003
+    - Eelco Dolstra
+- Nix package manager (nix)
+- Nix language
+- Systemd
+
+![bg left 40%](nix.png)
+
+---
+
+# Guix
+
+- Released 2012
+    - Forked from Nix
+- Guix package manager (guix)
+- GNU Guile (scheme/lisp)
+- GNU Shepherd
+    - Not GNU/Herd
+
+![bg left 40%](guix.png)
+
+---
+
+# Declarative Package Management
+
+## `nix` and `guix` commands
+
+---
+
+### Declarative Package Management
+
+- Update system repositories
+- Build and/or install packages
+- Manage `the store`
+
+---
+
+### Distro Store
+
+- Guix `/gnu/store`
+- Nix `/nix/store`
+- Stores all package and system files
+- Partially based off of configuration
+
+---
+
+### Distro Profile
+
+- Guix `~/.guix-profile`
+- Nix `~/.nix-profile`
+- Symlink Read only system
+    - Links store to current profile
+    - Based off configuration
+
+---
+
+- Store hold system and package files
+- Profile links to those files
+
+---
+
+### Multidirection
+
+```bash
+$ which gcc
+/home/tylerm/.guix-home/profile/bin/gcc # profile
+
+$ readlink /home/tylerm/.guix-home/profile/bin/gcc
+/gnu/store/spxcaq8gnmckhzz9a1wm3qc9dmz5bvsd-gcc-toolchain-12.3.0/bin/gcc # store
+```
+
+---
+
+## Multiple Profiles
+
+- System Profile (All users)
+    - Good to contain system needed pacakges
+    - Graphics drivers
+    - Zsh
+- User Profile (Specific user)
+    - Good to contain all user data
+    - Browser
+    - Applications
+    - DE/WM
+
+---
+
+## To Build The System
+
+- Package manager takes in user and system configuration
+- Downloads needed data into store
+- Build any needed packages
+- Symlinks the user and system profiles