add install script + isntructions

README.md

@@ -1,14 +1,19 @@
 # Topos
 
 <p align="center">
-  <img src="https://github.com/jonnyjohnson1/topos-cli/blob/main/topos/assets/topos_blk_rounded.png" style="max-width: 100%; height: 65; max-height: 65px;" alt="Private LLMs" />
+  <img src="https://github.com/jonnyjohnson1/topos-cli/blob/main/topos/assets/topos_blk_rounded.png" style="width: 70px; height: 70px;" alt="Private LLMs" />
 </p>
 <p align="center">
   <em>Private AI Backend Service</em>
 </p>
 
 A simple server running on your machine to use your local machine to power private conversations with friends, family, and coworkers. Runs with the [chat arena](https://github.com/jonnyjohnson1/chat-arena) app available on desktop and mobile.
 
+## (MacOS) Install App With .dmg
+*experimental*: This is new, and should work on most MacOS machines!
+Simply double click the topos.dmg file, and drag the app into your Applications directory.
+You should be able to launch the Topos service anywhere from your machine.
+
 ## Install with nix (Recommended)
 If nix is not installed:
 1. Install nix:   

scripts/install.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+# Find the 'topos-cli' directory
+TOPOS_CLI_DIR=$(find "$HOME" -type d -name "topos-cli" -print -quit 2>/dev/null)
+
+if [ -z "$TOPOS_CLI_DIR" ]; then
+    echo "Error: 'topos-cli' directory not found"
+    exit 1
+fi
+
+# Switch to the 'topos-cli' directory
+cd "$TOPOS_CLI_DIR"
+
+# Open a new Terminal window and run nix-shell
+# Force install nix on user's system: https://github.com/DeterminateSystems/nix-installer
+osascript <<EOF
+tell application "Terminal"
+    do script "cd '$TOPOS_CLI_DIR' && \
+    if ! command -v nix &> /dev/null && [ ! -d /nix ] && [ ! -f ~/.nix-profile/etc/profile.d/nix.sh ] && [ ! -d ~/.nix-profile ]; then \
+        echo 'Nix is not installed. Installing Nix...'; \
+        curl --proto '=https' --tlsv1.2 -sSf -L https://install.determinate.systems/nix | sh -s -- install --no-confirm; \
+        if [ -f ~/.nix-profile/etc/profile.d/nix.sh ]; then \
+            source ~/.nix-profile/etc/profile.d/nix.sh; \
+        else \
+            echo 'Error: Nix profile script not found. Please check the installation.'; \
+            exit 1; \
+        fi; \
+        echo 'Nix installation complete.'; \
+    else \
+        echo 'Nix is already installed.'; \
+    fi && nix-shell"
+end tell
+EOF