Replace inputs.self with relative paths

For paths which are next or beneath the current file it's IMO more readable to
use relative paths.

flake.nix

@@ -25,8 +25,8 @@
       home-manager,
     }:
     let
-      mkComputer = import "${inputs.self}/lib/mk_computer.nix";
-      mkRaspi = import "${inputs.self}/lib/mk_raspi.nix";
+      mkComputer = import ./lib/mk_computer.nix;
+      mkRaspi = import ./lib/mk_raspi.nix;
       mksdImage =
         host:
         (self.nixosConfigurations.${host}.extendModules {
@@ -93,7 +93,7 @@
         "zweili@co-ws-con4" = home-manager.lib.homeManagerConfiguration {
           inherit pkgs;
           modules = [
-            "${inputs.self}/home-manager/profiles/work-wsl.nix"
+            ./home-manager/profiles/work-wsl.nix
             inputs.agenix.homeManagerModules.age
           ];
           extraSpecialArgs = {

home-manager/profiles/desktop.nix

@@ -1,4 +1,4 @@
-{ inputs, pkgs, ... }:
+{ pkgs, ... }:
 let
   az-media = pkgs.writeShellScriptBin "az-media" ''
     videos="videos"
@@ -10,7 +10,7 @@ let
   '';
 in
 {
-  imports = [ "${inputs.self}/home-manager/profiles/management.nix" ];
+  imports = [ ./management.nix ];
   home = {
     packages = with pkgs; [
       chromium # needed for cloud gaming

home-manager/profiles/management.nix

@@ -1,4 +1,4 @@
-{ inputs, pkgs, ... }:
+{ pkgs, ... }:
 let
   unlock-luks = pkgs.writeShellScriptBin "unlock-luks" ''
     until ${pkgs.netcat}/bin/nc -vzw 2 $1 22; do
@@ -12,7 +12,7 @@ let
   '';
 in
 {
-  imports = [ "${inputs.self}/home-manager/profiles/headless.nix" ];
+  imports = [ ./headless.nix ];
 
   home = {
     packages = [

home-manager/profiles/work-wsl.nix

@@ -5,7 +5,7 @@
   ...
 }:
 {
-  imports = [ "${inputs.self}/home-manager/profiles/headless.nix" ];
+  imports = [ ./headless.nix ];
 
   programs.direnv = {
     enable = true;