From e422da8f835d883c92ac4e2b23115977a114fe0f Mon Sep 17 00:00:00 2001
From: Raito Bezarius <masterancpp@gmail.com>
Date: Tue, 2 Jul 2024 11:08:19 +0200
Subject: [PATCH] terranix: init

Adds simple `nix run .#apply` & `nix run .#destroy` which renders the
configuration file and let Terraform drive it.

Signed-off-by: Raito Bezarius <masterancpp@gmail.com>
---
 .gitignore |   1 +
 flake.lock | 102 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
 flake.nix  |  45 +++++++++++++++++++++--
 3 files changed, 145 insertions(+), 3 deletions(-)

diff --git a/.gitignore b/.gitignore
index 682cac6..9237589 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 result
 .gcroots
+config.tf.json
diff --git a/flake.lock b/flake.lock
index 571b88a..c328b6a 100644
--- a/flake.lock
+++ b/flake.lock
@@ -23,6 +23,38 @@
         "type": "github"
       }
     },
+    "bats-assert": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1636059754,
+        "narHash": "sha256-ewME0l27ZqfmAwJO4h5biTALc9bDLv7Bl3ftBzBuZwk=",
+        "owner": "bats-core",
+        "repo": "bats-assert",
+        "rev": "34551b1d7f8c7b677c1a66fc0ac140d6223409e5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "bats-core",
+        "repo": "bats-assert",
+        "type": "github"
+      }
+    },
+    "bats-support": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1548869839,
+        "narHash": "sha256-Gr4ntadr42F2Ks8Pte2D4wNDbijhujuoJi4OPZnTAZU=",
+        "owner": "bats-core",
+        "repo": "bats-support",
+        "rev": "d140a65044b2d6810381935ae7f0c94c7023c8c3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "bats-core",
+        "repo": "bats-support",
+        "type": "github"
+      }
+    },
     "colmena": {
       "inputs": {
         "flake-compat": "flake-compat",
@@ -115,6 +147,21 @@
         "type": "github"
       }
     },
+    "flake-utils_2": {
+      "locked": {
+        "lastModified": 1634851050,
+        "narHash": "sha256-N83GlSGPJJdcqhUxSCS/WwW5pksYf3VP1M13cDRTSVA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "c91f3de5adaf1de973b797ef7485e441a65b8935",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "home-manager": {
       "inputs": {
         "nixpkgs": [
@@ -230,6 +277,21 @@
         "type": "github"
       }
     },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1636823747,
+        "narHash": "sha256-oWo1nElRAOZqEf90Yek2ixdHyjD+gqtS/pAgwaQ9UhQ=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "f6a2ed2082d9a51668c86ba27d0b5496f7a2ea93",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "pre-commit-hooks": {
       "flake": false,
       "locked": {
@@ -255,7 +317,8 @@
           "hydra",
           "nix"
         ],
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs",
+        "terranix": "terranix"
       }
     },
     "stable": {
@@ -288,6 +351,43 @@
         "repo": "default",
         "type": "github"
       }
+    },
+    "terranix": {
+      "inputs": {
+        "bats-assert": "bats-assert",
+        "bats-support": "bats-support",
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": "nixpkgs_2",
+        "terranix-examples": "terranix-examples"
+      },
+      "locked": {
+        "lastModified": 1695406838,
+        "narHash": "sha256-xiUfVD6rtsVWFotVtUW3Q1nQh4obKzgvpN1wqZuGXvM=",
+        "owner": "terranix",
+        "repo": "terranix",
+        "rev": "fc9077ca02ab5681935dbf0ecd725c4d889b9275",
+        "type": "github"
+      },
+      "original": {
+        "owner": "terranix",
+        "repo": "terranix",
+        "type": "github"
+      }
+    },
+    "terranix-examples": {
+      "locked": {
+        "lastModified": 1636300201,
+        "narHash": "sha256-0n1je1WpiR6XfCsvi8ZK7GrpEnMl+DpwhWaO1949Vbc=",
+        "owner": "terranix",
+        "repo": "terranix-examples",
+        "rev": "a934aa1cf88f6bd6c6ddb4c77b77ec6e1660bd5e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "terranix",
+        "repo": "terranix-examples",
+        "type": "github"
+      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index 4623b9d..ea9f1ab 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,6 +3,7 @@
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    terranix.url = "github:terranix/terranix";
 
     agenix.url = "github:ryantm/agenix";
     agenix.inputs.nixpkgs.follows = "nixpkgs";
@@ -16,10 +17,50 @@
     lix.follows = "hydra/nix";
   };
 
-  outputs = { nixpkgs, ... } @ inputs: {
+  outputs = { self, nixpkgs, terranix, ... } @ inputs:
+  let
+    system = "x86_64-linux";
+    pkgs = import nixpkgs {
+      localSystem = system;
+      overlays = [
+        inputs.hydra.overlays.default
+        inputs.lix.overlays.default
+      ];
+    };
+    lib = pkgs.lib;
+    terraform = pkgs.opentofu;
+    terraformCfg = terranix.lib.terranixConfiguration {
+      inherit system;
+      modules = [ ];
+    };
+  in
+  {
+    apps.${system} = {
+      apply = {
+        type = "app";
+        program = toString (pkgs.writers.writeBash "apply" ''
+            set -eo pipefail
+            rm -f config.tf.json
+            cp ${terraformCfg} config.tf.json
+            ${lib.getExe terraform} init
+            ${lib.getExe terraform} apply
+          '');
+        };
+        # nix run ".#destroy"
+        destroy = {
+          type = "app";
+          program = toString (pkgs.writers.writeBash "destroy" ''
+            set -eo pipefail
+            ln -snf ${terraformCfg} config.tf.json
+            ${lib.getExe terraform} init
+            ${lib.getExe terraform} destroy
+          '');
+        };
+    };
+    defaultApp.${system} = self.apps.${system}.apply;
     colmena = {
       meta.nixpkgs = import nixpkgs {
-        system = "x86_64-linux";
+        localSystem = system;
         overlays = [
           inputs.hydra.overlays.default
           inputs.lix.overlays.default