feat(installer): add software-profile multi-select

- Add select_profiles step with gum choose --no-limit
- Implement state persistence and review for selected profiles
- Map profiles to home.packages and system-level toggles (Docker, Steam)
- Update generate_flake_config to emit profile-specific Nix snippets
- Fix duplicate environment.systemPackages in virtualization.nix
- Update ROADMAP.md

installer/install.sh

@@ -39,6 +39,7 @@ LOCALE=""
 FORM_FACTOR=""
 HARDWARE_MODULES=""
 NOMARCHY_HW_OPTS=""
+SELECTED_PROFILES=""
 # "" = not yet answered; "true"/"false" set by configure_impermanence.
 ENABLE_IMPERMANENCE=""
 
@@ -95,7 +96,8 @@ save_state() {
     declare -p \
         TARGET_DRIVE USERNAME HOSTNAME TIMEZONE \
         KEYMAP_LAYOUT KEYMAP_VARIANT LOCALE FORM_FACTOR \
-        ENABLE_IMPERMANENCE HARDWARE_MODULES NOMARCHY_HW_OPTS NOMARCHY_REV \
+        ENABLE_IMPERMANENCE HARDWARE_MODULES NOMARCHY_HW_OPTS \
+        SELECTED_PROFILES NOMARCHY_REV \
         > "$STATE_FILE"
 }
 
@@ -685,7 +687,41 @@ configure_impermanence() {
 }
 
 # ============================================================================
-# STEP 8: REVIEW & CONFIRM
+# STEP 8: SOFTWARE PROFILES (OPTIONAL)
+# ============================================================================
+
+select_profiles() {
+    section "Software Profiles"
+
+    if [[ -n "$SELECTED_PROFILES" ]]; then
+        success "Resumed selected profiles"
+        return
+    fi
+
+    info "Pick optional software profiles to include in your configuration."
+    info "Multiple selection allowed (Space to select, Enter to confirm)."
+    echo ""
+
+    SELECTED_PROFILES=$(nrun gum choose --no-limit --header "Select Profiles" \
+        "Dev (VSCode, Git, Lazygit, Zed, Docker)" \
+        "Gaming (Steam, Gamemode, Lutris, Heroic)" \
+        "Office (LibreOffice, Thunderbird, Obsidian, Zotero)" \
+        "Media (VLC, OBS Studio, GIMP, Inkscape, Spotify)" \
+        "CLI Utils (ripgrep, fd, bat, eza, zoxide, fzf)")
+
+    if [[ -z "$SELECTED_PROFILES" ]]; then
+        info "No profiles selected (minimal install)"
+    else
+        # Count selected profiles by number of lines
+        local count
+        count=$(echo "$SELECTED_PROFILES" | grep -c "^" || echo 0)
+        success "Selected $count profile(s)"
+    fi
+    save_state
+}
+
+# ============================================================================
+# STEP 9: REVIEW & CONFIRM
 # ============================================================================
 
 review_configuration() {
@@ -699,6 +735,7 @@ review_configuration() {
     echo "  Timezone:      $TIMEZONE"
     echo "  Form factor:   $FORM_FACTOR"
     echo "  Impermanence:  $ENABLE_IMPERMANENCE"
+    echo "  Profiles:      ${SELECTED_PROFILES:-None}"
     echo "  Nomarchy rev:  ${NOMARCHY_REV:-main (unpinned)}"
     echo ""
 
@@ -897,6 +934,32 @@ generate_flake_config() {
     local impermanence_opt=""
     [[ "$ENABLE_IMPERMANENCE" == "true" ]] && impermanence_opt="nomarchy.system.impermanence.enable = true;"
 
+    local PROFILE_SYSTEM_OPTS=""
+    local PROFILE_HOME_PACKAGES=""
+
+    while IFS= read -r profile; do
+        [[ -z "$profile" ]] && continue
+        case "$profile" in
+            "Dev "*)
+                PROFILE_SYSTEM_OPTS+=$'\n  # Dev profile\n  nomarchy.system.virtualization.docker.enable = true;'
+                PROFILE_HOME_PACKAGES+=$'\n    vscode\n    zed-editor\n    lazygit\n    gh\n    docker-compose'
+                ;;
+            "Gaming "*)
+                PROFILE_SYSTEM_OPTS+=$'\n  # Gaming profile\n  programs.steam.enable = true;\n  programs.gamemode.enable = true;'
+                PROFILE_HOME_PACKAGES+=$'\n    steam\n    lutris\n    heroic'
+                ;;
+            "Office "*)
+                PROFILE_HOME_PACKAGES+=$'\n    libreoffice\n    thunderbird\n    obsidian\n    zotero'
+                ;;
+            "Media "*)
+                PROFILE_HOME_PACKAGES+=$'\n    vlc\n    obs-studio\n    gimp\n    inkscape\n    spotify'
+                ;;
+            "CLI Utils "*)
+                PROFILE_HOME_PACKAGES+=$'\n    ripgrep\n    fd\n    bat\n    eza\n    zoxide\n    fzf'
+                ;;
+        esac
+    done <<< "$SELECTED_PROFILES"
+
     # Pin the upstream Nomarchy flake to the exact commit we're installing
     # from so the first post-reboot `nixos-rebuild` doesn't silently pull a
     # newer main. Fall back to tracking main if we couldn't resolve a SHA.
@@ -1009,6 +1072,7 @@ $xkb_variant_line
   nomarchy.system.formFactor = "$FORM_FACTOR";
 
   $impermanence_opt
+  $PROFILE_SYSTEM_OPTS
 
   # Compressed RAM swap. Near-free memory headroom on small machines and
   # harmless on big ones — kernel only uses it under pressure. Disable if
@@ -1116,6 +1180,7 @@ EOF
     btop                # Resource monitor (TUI)
     fastfetch           # System info at login
     chromium            # Secondary browser
+    $PROFILE_HOME_PACKAGES
 
     # --- Editors & dev ---
     # vscode
@@ -1234,6 +1299,7 @@ main() {
     select_hardware
     confirm_form_factor
     configure_impermanence
+    select_profiles
     review_configuration
     execute_installation