chore: split devenv.nix into 2 files, one for backend and another for…

… non-essential services

devenv.lock

@@ -68,10 +68,10 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1736012469,
+        "lastModified": 1736798957,
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "8f3e1f807051e32d8c95cd12b9b421623850a34d",
+        "rev": "9abb87b552b7f55ac8916b6fc9e5cb486656a2f3",
         "type": "github"
       },
       "original": {

devenv.nix

@@ -1,18 +1,10 @@
 { pkgs, lib, inputs, ... }: 
 
-let
-  pkgs-unstable = import inputs.nixpkgs-unstable { system = pkgs.stdenv.system; };
-in
+# top-level devenv.nix. contains services not essential to running the backend, such as Prometheus and Kafka
 { 
   devcontainer.enable = true;
 
-  languages.elixir = {
-    enable = true;
-    package = pkgs-unstable.beamMinimal26Packages.elixir;
-  };
   enterShell = ''
-    export PATH="$HOME/.mix/escripts:$PATH"
-
     if [ ! -d ".devenv/state/grafana" ]; then
       cp -rL .devenv/profile/share/grafana .devenv/state/grafana
       chmod 777 -R .devenv/state/grafana
@@ -23,74 +15,49 @@ in
     fi
   '';
 
+  # https://devenv.sh/common-patterns/#configure-the-shell-based-on-the-current-machine
+  packages = [
+    pkgs.gnumake
+    pkgs.antora
+    pkgs.python314
+    pkgs.grafana
+    pkgs.prometheus
+  ];
+
+  # for Antora extensions
+  languages.javascript.enable = true;
+  languages.javascript.yarn = {
+    enable = true;
+    install.enable = true;
+  };
+
   tasks = {
     "mix:deps" = {
-      exec = ''
+      # overrides the imported task to cd
+      exec = lib.mkForce ''
         cd tololo
         mix deps.get
       '';
-      # runs before entering shell and before testing
-      before = [ "devenv:enterShell" "devenv:enterTest" ];
     };
     "mix:format" = {
-      exec = ''
+      # overrides the imported task to cd
+      exec = lib.mkForce ''
         cd tololo
         mix format --check-formatted
       '';
     };
   };
-  
+
   enterTest = ''
     cd tololo
-
     mix test
     mix credo
   '';
 
-  # https://devenv.sh/common-patterns/#configure-the-shell-based-on-the-current-machine
-  packages = [
-    pkgs.gnumake
-    pkgs.antora
-    pkgs.python314
-    pkgs.grafana
-    pkgs.prometheus
-  ] ++ 
-  # Linux only
-  lib.optionals pkgs.stdenv.isLinux [
-    # for ExUnit notifier
-    pkgs.libnotify
-
-    # for package - file_system
-    pkgs.inotify-tools
-  ] ++
-  # Darwin only
-  lib.optionals pkgs.stdenv.isDarwin [
-    # for ExUnit notifier
-    pkgs.terminal-notifier
-
-    # for package - file_system
-    pkgs.darwin.apple_sdk.frameworks.CoreFoundation
-    pkgs.darwin.apple_sdk.frameworks.CoreServices
-  ];
-
-  # for Antora extensions
-  languages.javascript.enable = true;
-  languages.javascript.yarn = {
-    enable = true;
-    install.enable = true;
-  };
-
   processes = {
     grafana.exec = "grafana server --homepath .devenv/state/grafana";
     prometheus.exec = "prometheus --storage.tsdb.path .devenv/state/prometheus/data";
   };
 
-  services.postgres = {
-    enable = true;
-    initialScript = ''
-      CREATE ROLE postgres WITH SUPERUSER LOGIN PASSWORD 'postgres';
-    '';
-  };
-
   services.kafka.enable = true;
 }

devenv.yaml

@@ -1,3 +1,5 @@
 inputs:
   nixpkgs-unstable:
     url: github:NixOS/nixpkgs/nixos-unstable
+imports:
+- ./tololo

tololo/devenv.lock

@@ -0,0 +1,116 @@
+{
+  "nodes": {
+    "devenv": {
+      "locked": {
+        "dir": "src/modules",
+        "lastModified": 1736426010,
+        "owner": "cachix",
+        "repo": "devenv",
+        "rev": "1c384bc4be3ee571511fbbc6fdc94fe47d60f6cf",
+        "type": "github"
+      },
+      "original": {
+        "dir": "src/modules",
+        "owner": "cachix",
+        "repo": "devenv",
+        "type": "github"
+      }
+    },
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1733328505,
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "ff81ac966bb2cae68946d5ed5fc4994f96d0ffec",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "pre-commit-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1709087332,
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1733477122,
+        "owner": "cachix",
+        "repo": "devenv-nixpkgs",
+        "rev": "7bd9e84d0452f6d2e63b6e6da29fe73fac951857",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "ref": "rolling",
+        "repo": "devenv-nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-unstable": {
+      "locked": {
+        "lastModified": 1736798957,
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "9abb87b552b7f55ac8916b6fc9e5cb486656a2f3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "pre-commit-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1735882644,
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "rev": "a5a961387e75ae44cc20f0a57ae463da5e959656",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "devenv": "devenv",
+        "nixpkgs": "nixpkgs",
+        "nixpkgs-unstable": "nixpkgs-unstable",
+        "pre-commit-hooks": "pre-commit-hooks"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

tololo/devenv.nix

@@ -0,0 +1,62 @@
+{ pkgs, lib, inputs, ... }: 
+
+# backend devenv.nix. contains only the essential dependencies to run the project
+let
+  pkgs-unstable = import inputs.nixpkgs-unstable { system = pkgs.stdenv.system; };
+in
+{ 
+  languages.elixir = {
+    enable = true;
+    package = pkgs-unstable.beamMinimal26Packages.elixir;
+  };
+  enterShell = ''
+    export PATH="$HOME/.mix/escripts:$PATH"
+  '';
+
+  tasks = {
+    "mix:deps" = {
+      exec = ''
+        mix deps.get
+      '';
+      # runs before entering shell and before testing
+      before = [ "devenv:enterShell" "devenv:enterTest" ];
+    };
+    "mix:format" = {
+      exec = ''
+        mix format --check-formatted
+      '';
+    };
+  };
+
+  enterTest = ''
+    mix test
+    mix credo
+  '';
+
+  # https://devenv.sh/common-patterns/#configure-the-shell-based-on-the-current-machine
+  packages =  # Linux only
+  lib.optionals pkgs.stdenv.isLinux [
+    # for ExUnit notifier
+    pkgs.libnotify
+
+    # for package - file_system
+    pkgs.inotify-tools
+  ] ++
+  # Darwin only
+  lib.optionals pkgs.stdenv.isDarwin [
+    # for ExUnit notifier
+    pkgs.terminal-notifier
+
+    # for package - file_system
+    pkgs.darwin.apple_sdk.frameworks.CoreFoundation
+    pkgs.darwin.apple_sdk.frameworks.CoreServices
+  ];
+
+  services.postgres = {
+    enable = true;
+    initialScript = ''
+      CREATE ROLE postgres WITH SUPERUSER LOGIN PASSWORD 'postgres';
+    '';
+  };
+}
+

tololo/devenv.yaml

@@ -0,0 +1,3 @@
+inputs:
+  nixpkgs-unstable:
+    url: github:NixOS/nixpkgs/nixos-unstable