add nix install option

Author: sejoharp

README.md

@@ -3,17 +3,19 @@
 It's a cli tool to manage work times.
 
 <!-- TOC -->
-* [worktimers](#worktimers)
-  * [Usage](#usage)
-    * [start working](#start-working)
-    * [stop working](#stop-working)
-    * [list worked intervals](#list-worked-intervals)
-  * [Installation](#installation)
-    * [install release](#install-release)
-    * [install from source](#install-from-source)
-    * [add config](#add-config)
-  * [Development](#development)
-    * [create a release](#create-a-release)
+- [worktimers](#worktimers)
+  - [Usage](#usage)
+    - [start working](#start-working)
+    - [stop working](#stop-working)
+    - [list worked intervals](#list-worked-intervals)
+  - [Installation](#installation)
+    - [install release](#install-release)
+    - [install from source](#install-from-source)
+  - [install local with nix](#install-local-with-nix)
+  - [install via nix home-manager](#install-via-nix-home-manager)
+    - [add config](#add-config)
+  - [Development](#development)
+    - [create a release](#create-a-release)
 <!-- TOC -->
 
 ## Usage
@@ -68,6 +70,34 @@ brew install rustup-init
 make install
 ```
 
+## install local with nix
+```shell
+nix build
+```
+
+## install via nix home-manager
+```bash
+# move to home-manager config. e.g.:
+cd ~/.config/home-manager
+
+# add this as input;
+    actpkg = {
+      url = "github:sejoharp/act";
+    };
+
+# optional: update index
+nix flake lock --update-input actpkg
+
+# add this to packages:
+inputs.reposyncpkg.packages.${pkgs.stdenv.system}.default
+
+# build generation
+nh home build .
+
+# switch generation
+nh home switch .
+```
+
 ### add config
 
 add `.worktimers.json` to your home directory and adjust the following content:
@@ -81,8 +111,19 @@ add `.worktimers.json` to your home directory and adjust the following content:
 
 ## Development
 
+
 ### create a release
-1. make a commit 
-2. push it
-3. github actions will create a release
+```bash
+# bump version (patch by default)
+make version-update
+
+# create a git commit
+git add ...
+git commit ...
+
+# tag the commit
+make tag-release
 
+# push commit and tag
+make push-release
+```

flake.lock

@@ -0,0 +1,51 @@
+{
+  description = "Rust example flake for Zero to Nix";
+
+  inputs = {
+    # Latest stable Nixpkgs
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+  };
+
+  outputs =
+    {
+      self,
+      nixpkgs,
+    }:
+    let
+      pkgs = import <nixpkgs> { };
+      manifest = (nixpkgs.lib.importTOML ./Cargo.toml).package;
+
+      # Systems supported
+      allSystems = [
+        "x86_64-linux" # 64-bit Intel/AMD Linux
+        "aarch64-linux" # 64-bit ARM Linux
+        "x86_64-darwin" # 64-bit Intel macOS
+        "aarch64-darwin" # 64-bit ARM macOS
+      ];
+
+      # Helper to provide system-specific attributes
+      forAllSystems =
+        f:
+        nixpkgs.lib.genAttrs allSystems (
+          system:
+          f {
+            pkgs = import nixpkgs { inherit system; };
+          }
+        );
+    in
+    {
+      packages = forAllSystems (
+        { pkgs }:
+        {
+          default = pkgs.rustPlatform.buildRustPackage {
+            name = manifest.name;
+            version = manifest.version;
+            src = pkgs.lib.cleanSource ./.;
+            cargoLock = {
+              lockFile = ./Cargo.lock;
+            };
+          };
+        }
+      );
+    };
+}

flake.nix

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+CURRENT_VERSION=$(grep '^version = ' Cargo.toml | sed 's/version = "\(.*\)"/\1/')
+echo "Current version: $CURRENT_VERSION"
+
+case "${1:-patch}" in
+  "patch")
+    NEW_VERSION=$(echo $CURRENT_VERSION | awk -F. '{$NF = $NF + 1;} 1' | sed 's/ /./g')
+    ;;
+  "minor")
+    NEW_VERSION=$(echo $CURRENT_VERSION | awk -F. '{$(NF-1) = $(NF-1) + 1; $NF = 0} 1' | sed 's/ /./g')
+    ;;
+  "major")
+    NEW_VERSION=$(echo $CURRENT_VERSION | awk -F. '{$1 = $1 + 1; $2 = 0; $3 = 0} 1' | sed 's/ /./g')
+    ;;
+  *)
+    NEW_VERSION="$1"
+    ;;
+esac
+
+echo "New version: $NEW_VERSION"
+
+# Fix for macOS: Use sed -i '' (empty string for no backup)
+if [[ "$OSTYPE" == "darwin"* ]]; then
+  sed -i '' "s/^version = \".*\"/version = \"$NEW_VERSION\"/" Cargo.toml
+else
+  sed -i "s/^version = \".*\"/version = \"$NEW_VERSION\"/" Cargo.toml
+fi
+cargo check --quiet
+
+echo "Updated Cargo.toml: $(grep '^version = ' Cargo.toml)"