Use zsh-histdb package.

nix/configuration/flake.lock

@@ -76,6 +76,24 @@
         "type": "github"
       }
     },
+    "flake-utils_2": {
+      "inputs": {
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "gitignore": {
       "inputs": {
         "nixpkgs": [
@@ -259,7 +277,8 @@
         "lanzaboote": "lanzaboote",
         "nixpkgs": "nixpkgs",
         "nixpkgs-b93b4e9b5": "nixpkgs-b93b4e9b5",
-        "nixpkgs-unstable": "nixpkgs-unstable"
+        "nixpkgs-unstable": "nixpkgs-unstable",
+        "zsh-histdb": "zsh-histdb"
       }
     },
     "rust-overlay": {
@@ -301,6 +320,39 @@
         "repo": "default",
         "type": "github"
       }
+    },
+    "systems_2": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "zsh-histdb": {
+      "inputs": {
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1,
+        "narHash": "sha256-vPz7cJzdLAWFWQQ/KSXGB+HsUfO8CnPX4AO4zjf9llo=",
+        "path": "flakes/zsh-histdb",
+        "type": "path"
+      },
+      "original": {
+        "path": "flakes/zsh-histdb",
+        "type": "path"
+      }
     }
   },
   "root": "root",

nix/configuration/flake.nix

@@ -38,6 +38,12 @@
     lanzaboote = {
       url = "github:nix-community/lanzaboote/v0.4.1";
 
+      # Optional but recommended to limit the size of your system closure.
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    zsh-histdb = {
+      url = "path:flakes/zsh-histdb";
+
       # Optional but recommended to limit the size of your system closure.
       inputs.nixpkgs.follows = "nixpkgs";
     };
@@ -52,6 +58,7 @@
       impermanence,
       home-manager,
       lanzaboote,
+      zsh-histdb,
       ...
     }@inputs:
     let
@@ -73,6 +80,7 @@
             home-manager.useGlobalPkgs = true;
             home-manager.useUserPackages = true;
           }
+          { nixpkgs.overlays = [ zsh-histdb.overlays.default ]; }
           ./configuration.nix
         ];
       };

nix/configuration/roles/zsh/default.nix

@@ -5,13 +5,94 @@
   ...
 }:
 
+let
+  zshrc = pkgs.writeTextFile {
+    name = ".zshrc";
+    text = ''
+      # Lines configured by zsh-newuser-install
+      HISTFILE=~/.zhistory
+      HISTSIZE=100000
+      SAVEHIST=100000
+      setopt appendhistory notify
+      unsetopt beep
+      bindkey -e
+      # End of lines configured by zsh-newuser-install
+      # The following lines were added by compinstall
+      #
+
+      # Use menu complete immediately instead of after the first tab
+      setopt MENU_COMPLETE
+
+      zstyle :compinstall filename "$HOME/.zshrc"
+
+      autoload -Uz compinit
+      compinit
+      # End of lines added by compinstall
+
+      # Enable the 2d menu for tab completion
+      zstyle ':completion:*' menu select
+
+      autoload colors zsh/terminfo
+      if [[ "$terminfo[colors]" -ge 8 ]]; then
+          colors
+      fi
+      for color in RED GREEN YELLOW BLUE MAGENTA CYAN WHITE; do
+          eval PR_$color='%{$terminfo[bold]$fg[''${(L)color}]%}'
+          eval PR_LIGHT_$color='%{$fg[''${(L)color}]%}'
+          (( count = $count + 1 ))
+      done
+      PR_NO_COLOR="%{$terminfo[sgr0]%}"
+      PS1="[$PR_BLUE%n$PR_WHITE@$PR_GREEN%U%m%u$PR_NO_COLOR:$PR_RED%2c$PR_NO_COLOR]%(!.#.$) "
+
+      source ${pkgs.zsh-histdb}/share/zsh/plugins/zsh-histdb/sqlite-history.zsh
+      autoload -Uz add-zsh-hook
+
+      source ${pkgs.zsh-histdb}/share/zsh/plugins/zsh-histdb/histdb-interactive.zsh
+      bindkey '^r' _histdb-isearch
+
+      # TODO: Consider moving to /etc/profile.d
+      #while read file; do
+      #    if [ -e "$file" ]; then
+      #        source "$file"
+      #    fi
+      #done <<<"$(find $HOME/.config/ansible_deploy/zshrc -maxdepth 1 -type f -name '*.zsh' -print)"
+    '';
+  };
+in
 {
   imports = [ ];
 
   environment.systemPackages = with pkgs; [
     zsh
+    sqlite # TODO: can this be pulled into zsh-histdb automatically?
   ];
 
   users.users.talexander.shell = pkgs.zsh;
   environment.shells = with pkgs; [ zsh ];
+
+  programs.zsh = {
+    enable = true;
+  };
+
+  home-manager.users.talexander =
+    { pkgs, ... }:
+    {
+      home.file.".zshrc" = {
+        source = "${zshrc}";
+      };
+    };
+
+  environment.persistence."/persist" = lib.mkIf (!config.me.buildingIso) {
+    hideMounts = true;
+    users.talexander = {
+      directories = [
+        {
+          directory = ".histdb";
+          user = "talexander";
+          group = "talexander";
+          mode = "0700";
+        }
+      ];
+    };
+  };
 }