General improvements, deprecate `activate` profile option in favor of executing $PROFILE/activate (Wrap It Yourself) to ensure successful rollback activations

1 files changed, 53 insertions, 35 deletions

diff --git a/examples/system/flake.nix b/examples/system/flake.nix
index 5179258..68cf3ce 100644
--- a/examples/system/flake.nix
+++ b/examples/system/flake.nix
@@ -5,47 +5,65 @@
 {
   description = "Deploy a full system with hello service as a separate profile";
 
-  outputs = { self, nixpkgs }: {
-    nixosConfigurations.example-nixos-system = nixpkgs.lib.nixosSystem {
-      system = "x86_64-linux";
-      modules = [ ./configuration.nix ];
-    };
+  outputs = { self, nixpkgs }:
+    let
+      setActivate = base: activate: nixpkgs.legacyPackages.x86_64-linux.symlinkJoin {
+        name = ("activatable-" + base.name);
+        paths = [
+          base
+          (nixpkgs.legacyPackages.x86_64-linux.writeTextFile {
+            name = base.name + "-activate-path";
+            text = ''
+              #!${nixpkgs.legacyPackages.x86_64-linux.runtimeShell}
+              ${activate}
+            '';
+            executable = true;
+            destination = "/activate";
+          })
+        ];
+      };
+    in
+    {
+      nixosConfigurations.example-nixos-system = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        modules = [ ./configuration.nix ];
+      };
 
-    nixosConfigurations.bare = nixpkgs.lib.nixosSystem {
-      system = "x86_64-linux";
-      modules =
-        [ ./bare.nix "${nixpkgs}/nixos/modules/virtualisation/qemu-vm.nix" ];
-    };
+      nixosConfigurations.bare = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        modules =
+          [ ./bare.nix "${nixpkgs}/nixos/modules/virtualisation/qemu-vm.nix" ];
+      };
 
-    # This is the application we actually want to run
-    defaultPackage.x86_64-linux = import ./hello.nix nixpkgs;
+      # This is the application we actually want to run
+      defaultPackage.x86_64-linux = import ./hello.nix nixpkgs;
 
-    deploy.nodes.example = {
-      sshOpts = [ "-p" "2221" ];
-      hostname = "localhost";
-      fastConnection = true;
-      profiles = {
-        system = {
-          sshUser = "admin";
-          activate = "$PROFILE/bin/switch-to-configuration switch";
-          path =
-            self.nixosConfigurations.example-nixos-system.config.system.build.toplevel;
-          user = "root";
-        };
-        hello = {
-          sshUser = "hello";
-          activate = "$PROFILE/bin/activate";
-          path = self.defaultPackage.x86_64-linux;
-          user = "hello";
+      deploy.nodes.example = {
+        sshOpts = [ "-p" "2221" ];
+        hostname = "localhost";
+        fastConnection = true;
+        profiles = {
+          system = {
+            sshUser = "admin";
+            path =
+              setActivate self.nixosConfigurations.example-nixos-system.config.system.build.toplevel "./bin/switch-to-configuration switch";
+            user = "root";
+          };
+          hello = {
+            sshUser = "hello";
+            path = setActivate self.defaultPackage.x86_64-linux "./bin/activate";
+            user = "hello";
+          };
         };
       };
-    };
 
-    checks = builtins.mapAttrs (_: pkgs: {
-      jsonschema = pkgs.runCommandNoCC "jsonschema-deploy-system" { }
-        "${pkgs.python3.pkgs.jsonschema}/bin/jsonschema -i ${
+      checks = builtins.mapAttrs
+        (_: pkgs: {
+          jsonschema = pkgs.runCommandNoCC "jsonschema-deploy-system" { }
+            "${pkgs.python3.pkgs.jsonschema}/bin/jsonschema -i ${
           pkgs.writeText "deploy.json" (builtins.toJSON self.deploy)
         } ${../../interface/deploy.json} && touch $out";
-    }) nixpkgs.legacyPackages;
-  };
+        })
+        nixpkgs.legacyPackages;
+    };
 }