chore: Suggestions from review

- Filter out non-source files from llama-scripts flake derivation
- Clean up unused closure
- Remove scripts devShell

.devops/nix/devshells.nix

@@ -2,8 +2,13 @@
   perSystem =
     { config, lib, ... }:
     {
-      devShells = lib.concatMapAttrs (name: package: {
-        ${name} = package.passthru.shell;
-      }) config.packages;
+      devShells = lib.pipe (config.packages) [
+        (lib.concatMapAttrs
+        (name: package: {
+          ${name} = package.passthru.shell or null;
+        }))
+        (lib.filterAttrs (name: value: value != null))
+      ];
     };
 }
+

.devops/nix/package.nix

@@ -71,7 +71,6 @@ let
   ) ", accelerated with ${strings.concatStringsSep ", " suffices}";
 
   executableSuffix = effectiveStdenv.hostPlatform.extensions.executable;
-  mapToPythonPackages = ps: packages: map (package: ps.${package}) packages;
 
   xcrunHost = runCommand "xcrunHost" { } ''
     mkdir -p $out/bin
@@ -125,14 +124,13 @@ effectiveStdenv.mkDerivation (finalAttrs: {
     filter =
       name: type:
       let
-        noneOf = builtins.all (x: !x);
-        baseName = baseNameOf name;
+        any = builtins.any (x: x);
+        baseName = builtins.baseNameOf name;
       in
-      noneOf [
-        (lib.hasSuffix ".nix" name) # Ignore *.nix files when computing outPaths
-        (lib.hasSuffix ".md" name) # Ignore *.md changes whe computing outPaths
-        (lib.hasPrefix "." baseName) # Skip hidden files and directories
-        (baseName == "flake.lock")
+      any [
+        (lib.hasSuffix ".py" name)
+        (baseName == "README.md")
+        (baseName == "pyproject.toml")
       ];
     src = lib.cleanSource ../../.;
   };

.devops/nix/python-scripts.nix

@@ -23,12 +23,27 @@ in
 
 buildPythonPackage ({
   pname = "llama-scripts";
-  src = ../../.;
   version = "0.0.0";
   pyproject = true;
+
+  # NOTE: The files filtered out here are not visible in the build sandbox, neither
+  # do they affect the output hash. They can be modified without triggering a rebuild.
+  src = lib.cleanSourceWith {
+    filter =
+      name: type:
+      let
+        any = builtins.any (x: x);
+        baseName = builtins.baseNameOf name;
+      in
+      any [
+        (lib.hasSuffix ".py" name)
+        (baseName == "README.md")
+        (baseName == "pyproject.toml")
+      ];
+    src = lib.cleanSource ../../.;
+  };
   nativeBuildInputs = [ poetry-core ];
-  projectDir = ../../.;
-  propagatedBuildInputs = llama-python-deps;
+  dependencies = llama-python-deps;
 
   passthru = {
     shell = mkShell {