Update default.nix and remove overlays for uv package management

home/features/development/default.nix

@@ -23,7 +23,7 @@
     tokei # code statistics
     cachix
     nix-prefetch-git # nix development
-    nix-prefetch-url # nix Development
+    uv # for python
   ];
 
 }

overlays/flake.nix

@@ -0,0 +1,38 @@
+# This file defines overlays
+{
+  inputs,
+  ...
+}:
+
+{
+  # https://nixos.wiki/wiki/Overlays
+
+  modifications = final: prev: {
+
+    uv = prev.uv.overrideAttrs (_: rec {
+      version = "0.5.10";
+      src = prev.fetchFromGitHub {
+        owner = "astral-sh";
+        repo = "uv";
+        rev = "refs/tags/${version}";
+        hash = "sha256-GE/MgaX6JhzVVwrkz33fr1Vl83QD1WHhlB7vPdJ2W3c=";
+      };
+      cargoDeps = prev.rustPlatform.fetchCargoTarball {
+        inherit src;
+        name = "uv-${version}";
+        hash = "sha256-GE/MgaX6JhzVVwrkz33fr1Vl83QD1WHhlB7vPdJ2W3c=";
+      };
+    });
+
+  };
+
+  # When applied, the unstable nixpkgs set (declared in the flake inputs) will
+  # be accessible through 'pkgs.unstable'
+  unstable-packages = final: prev: {
+    unstable = import inputs.nixpkgs {
+      inherit (final) system;
+      config.allowUnfree = true;
+    };
+  };
+
+}

overlays/update-uv.sh

@@ -1,30 +1,78 @@
 #!/usr/bin/env bash
 
-# Get the source hash using nix-prefetch-url
-echo "Fetching source hash..."
-src_hash=$(nix-prefetch-url --unpack https://github.com/astral-sh/uv/archive/refs/tags/0.5.10.tar.gz)
-echo "Source hash obtained"
+# Function to get latest version from GitHub releases
+get_latest_version() {
+    curl -s https://api.github.com/repos/astral-sh/uv/releases/latest | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/'
+}
+
+# Function to get hashes
+get_hashes() {
+    local version=$1
+
+    # Get source hash
+    local src_hash=$(nix-prefetch-url --unpack https://github.com/astral-sh/uv/archive/refs/tags/${version}.tar.gz)
+    src_hash="sha256-$(nix-hash --type sha256 --to-base64 $src_hash)"
 
-# Create a temporary Nix expression to get the cargo hash
-cat > temp.nix << 'EOF'
+    # Create temporary nix file for cargo hash
+    cat > temp.nix << EOF
 { pkgs ? import <nixpkgs> {} }:
 
 pkgs.rustPlatform.fetchCargoTarball {
   src = pkgs.fetchFromGitHub {
     owner = "astral-sh";
     repo = "uv";
-    rev = "refs/tags/0.5.10";
+    rev = "refs/tags/${version}";
     hash = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
   };
-  name = "uv-0.5.10";
+  name = "uv-${version}";
   hash = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
 }
 EOF
 
-echo "Fetching cargo hash..."
-cargo_hash=$(nix-build temp.nix 2>&1 | grep 'got:' | tail -n1 | awk '{print $2}')
-rm temp.nix
+    # Get cargo hash
+    local cargo_hash=$(nix-build temp.nix 2>&1 | grep 'got:' | tail -n1 | awk '{print $2}')
+    rm temp.nix
+
+    echo "${src_hash} ${cargo_hash}"
+}
+
+# Function to update the overlay file
+update_overlay() {
+    local version=$1
+    local src_hash=$2
+    local cargo_hash=$3
+    local overlay_file="uv-overlay.nix"
+
+    cat > "${overlay_file}" << EOF
+final: prev: {
+  uv = prev.uv.overrideAttrs (oldAttrs: {
+    version = "${version}";
+    src = prev.fetchFromGitHub {
+      owner = "astral-sh";
+      repo = "uv";
+      rev = "refs/tags/\${oldAttrs.version}";
+      hash = "${src_hash}";
+    };
+    cargoDeps = prev.rustPlatform.fetchCargoTarball {
+      inherit (oldAttrs) src;
+      name = "uv-\${oldAttrs.version}";
+      hash = "${cargo_hash}";
+    };
+  });
+}
+EOF
+}
+
+# Main execution
+echo "Checking for latest uv version..."
+LATEST_VERSION=$(get_latest_version)
+echo "Latest version: ${LATEST_VERSION}"
+
+echo "Getting hashes..."
+read src_hash cargo_hash <<< $(get_hashes "${LATEST_VERSION}")
+echo "Source hash: ${src_hash}"
+echo "Cargo hash: ${cargo_hash}"
 
-echo "=== Results ==="
-echo "Source hash: sha256-$(nix has convert --type sha256 --to-base64 $src_hash)"
-echo "Cargo hash: $cargo_hash"
+echo "Updating overlay..."
+update_overlay "${LATEST_VERSION}" "${src_hash}" "${cargo_hash}"
+echo "Overlay updated successfully!"

overlays/uv-overlay.nix

@@ -0,0 +1,16 @@
+final: prev: {
+  uv = prev.uv.overrideAttrs (oldAttrs: {
+    version = "0.5.10";
+    src = prev.fetchFromGitHub {
+      owner = "astral-sh";
+      repo = "uv";
+      rev = "refs/tags/${oldAttrs.version}";
+      hash = "sha256-GE/MgaX6JhzVVwrkz33fr1Vl83QD1WHhlB7vPdJ2W3c=";
+    };
+    cargoDeps = prev.rustPlatform.fetchCargoTarball {
+      inherit (oldAttrs) src;
+      name = "uv-${oldAttrs.version}";
+      hash = "sha256-GE/MgaX6JhzVVwrkz33fr1Vl83QD1WHhlB7vPdJ2W3c=";
+    };
+  });
+}