first commit

hosts/common/users/default.nix

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+{
+  imports = [
+    ./jannik.mueller.nix
+    ./sascha.koenig.nix
+  ];
+}

hosts/common/users/jannik.mueller.nix

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+{
+  config,
+  pkgs,
+  inputs,
+  ...
+}: {
+  users.users."jannik.mueller" = {
+    hashedPassword = "$y$j9T$09RgD3AU3PK9Oi6JGLe0V1$i8J2ZOD1h1b6Zpw28ub.kExujoDKHzokeXzkM23Tfd/";
+    isNormalUser = true;
+    extraGroups = [
+      "wheel"
+      "networkmanager"
+      "libvirtd"
+      "flatpak"
+      "plugdev"
+      "input"
+      "kvm"
+      "qemu-libvirtd"
+    ];
+    openssh.authorizedKeys.keys = [
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPvZazSuIoWoRWhkAqQDMLeurxVUyy1MTllp1wfw1tzq"
+    ];
+    packages = [inputs.home-manager.packages.${pkgs.stdenv.hostPlatform.system}.default];
+  };
+}

hosts/common/users/sascha.koenig.nix

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+# hosts/common/users/m3tam3re.nix — Central user definition with m3ta-home integration.
+#
+# This module:
+#   1. Creates the m3tam3re NixOS user
+#   2. Loads the m3ta-home profile system via mkHome
+#   3. Sets per-host feature flags based on a host profile mapping
+#   4. Imports per-host home.nix overrides (monitors, HW-specific config)
+#
+# To add a new host:
+#   1. Add entry to hostProfiles below
+#   2. Add feature flags in the hostFlags section
+#   3. Create hosts/<hostname>/home.nix if the host needs overrides (monitors, etc.)
+{
+  config,
+  pkgs,
+  inputs,
+  ...
+}: let
+  hostname = config.networking.hostName;
+
+  # ── Per-host profile mapping ──
+  # Determines which m3ta-home context and sets each host gets.
+  hostProfiles = {
+    # ── Desktop hosts ──
+    AZ-LT-NIX = {
+      context = "desktop";
+      sets = ["coding" "media"];
+    };
+  };
+
+  profile =
+    hostProfiles.${
+      hostname
+    } or {
+      context = "server";
+      sets = [];
+    };
+  m3ta-lib = inputs.m3ta-home.lib;
+
+  # Check if a per-host home.nix exists
+  hostHomeFile = ./../../${hostname}/home.nix;
+  hostHomeExists = builtins.pathExists hostHomeFile;
+
+  # ── Per-host feature flags ──
+  # These enable/disable specific m3ta-home modules per host.
+  hostFlags =
+    if hostname == "AZ-LT-NIX"
+    then {
+      # Full desktop workstation
+      base = {
+        shell = {
+          fish.enable = true;
+          nushell.enable = true;
+          starship.enable = true;
+        };
+        cliTools = {
+          fzf.enable = true;
+          nitch.enable = true;
+          television.enable = true;
+        };
+        secrets.enable = true;
+      };
+      desktop = {
+        wm = {
+          hyprland.enable = true;
+          rofi.enable = true;
+          wayland.enable = true;
+        };
+        apps = {
+          crypto.enable = false;
+          obsidian.enable = true;
+          office.enable = true;
+        };
+        theme = {
+          fonts.enable = true;
+          wallpapers.enable = true;
+        };
+      };
+      coding = {
+        editors = {
+          neovim.enable = true;
+          zed.enable = true;
+        };
+        lsp.enable = true;
+        packages.enable = true;
+        languages = {
+          python.enable = true;
+          javascript.enable = true;
+          rustToolchain.enable = true;
+          go.enable = true;
+          typescript.enable = true;
+        };
+      };
+      profiles.media = {
+        obs.enable = true;
+        ffmpeg.enable = true;
+        kdenlive.enable = true;
+        ytDlp.enable = true;
+      };
+    }
+    else {
+      # m3-helios, m3-hermes, m3-aether — minimal server
+      base = {
+        shell = {
+          fish.enable = true;
+          starship.enable = true;
+        };
+        cliTools = {
+          fzf.enable = true;
+          nitch.enable = true;
+        };
+      };
+    };
+in {
+  # ── NixOS user definition ──
+  users.users."sascha.koenig" = {
+    hashedPassword = "$y$j9T$ORX4btVZgs9Xjq2oIvzJm0$lXiPwaa0D6t.eMDIx1UBesEAMOkWXBoGwpeI7X0aS8D";
+    isNormalUser = true;
+    shell = pkgs.nushell;
+    extraGroups = [
+      "wheel"
+      "networkmanager"
+      "libvirtd"
+      "flatpak"
+      "plugdev"
+      "input"
+      "kvm"
+      "qemu-libvirtd"
+    ];
+    openssh.authorizedKeys.keys = [
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIEZbg/Z9mnflXuLahGY8WOSBMqbgeqVIkIwRkquys1Ml sascha.koenig@azintec.com"
+      "ssh-rsa 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 m3tam3re@MBP-Sascha.fritz.box"
+    ];
+    packages = [inputs.home-manager.packages.${pkgs.stdenv.hostPlatform.system}.default];
+  };
+
+  # ── Home-Manager configuration via m3ta-home ──
+  home-manager.users."sascha.koenig" = {
+    imports =
+      [
+        # Load m3ta-home composition engine
+        (m3ta-lib.mkHome {
+          user = "m3tam3re";
+          identity = "work";
+          inherit (profile) context sets;
+        })
+        # Per-host feature flags
+        hostFlags
+      ]
+      # Per-host home.nix (Hyprland monitors, XDG/MIME, HW-specific overrides)
+      ++ (
+        if hostHomeExists
+        then [hostHomeFile]
+        else []
+      );
+  };
+}