fix(ci): add libpci-dev for zig build

Feat linux/packages

.gitea/workflows/release.yml

@@ -0,0 +1,48 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - "v*"
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libpci-dev zip
+
+      - name: Install Zig
+        uses: mlugg/setup-zig@v2
+        with:
+          version: 0.15.2
+
+      - name: Build
+        run: zig build -Doptimize=ReleaseSafe
+
+      - name: Package and release
+        env:
+          GITEA_TOKEN: ${{ secrets.RELEASE_TOKEN }}
+        run: |
+          cd zig-out/bin
+          zip ../../zigfetch-x86_64-linux.zip zigfetch
+          cd ../..
+
+          RELEASE_ID=$(curl -s -X POST "https://gitea.bitua.io/api/v1/repos/bitua/zigfetch/releases" \
+            -H "Authorization: token ${GITEA_TOKEN}" \
+            -H "Content-Type: application/json" \
+            -d "{\"tag_name\": \"${GITHUB_REF_NAME}\", \"name\": \"${GITHUB_REF_NAME}\"}" | jq -r .id)
+
+          echo "Release ID: $RELEASE_ID"
+
+          curl -s -X POST "https://gitea.bitua.io/api/v1/repos/bitua/zigfetch/releases/${RELEASE_ID}/assets?name=zigfetch-x86_64-linux.zip" \
+            -H "Authorization: token ${GITEA_TOKEN}" \
+            -F "attachment=@zigfetch-x86_64-linux.zip"

.github/workflows/build.yml

@@ -2,7 +2,12 @@ name: Build
 
 on:
   push:
-    branches: [ "main" ]
+    branches: ["main"]
+    paths:
+      - ".github/workflows/build.yml"
+      - "src/**"
+      - "build.zig"
+      - "build.zig.zon"
 
 jobs:
   build:
@@ -18,7 +23,7 @@ jobs:
               sudo apt-get install -y libpci-dev
 
           # macOS x86_64
-          - os: macos-13
+          - os: macos-15
             target: x86_64-darwin
             runner_arch: x64
             setup_deps: ""
@@ -32,70 +37,64 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - name: Checkout code
+      - name: Checkout code
-      uses: actions/checkout@v4
+        uses: actions/checkout@v4
 
-    - name: Setup Zig
+      - name: Setup Zig
-      uses: mlugg/setup-zig@v2
+        uses: mlugg/setup-zig@v2
-      with:
+        with:
-        version: 0.15.1
+          version: 0.15.2
 
-    - name: Setup platform dependencies
+      - name: Setup platform dependencies
-      if: matrix.setup_deps != ''
+        if: matrix.setup_deps != ''
-      run: ${{ matrix.setup_deps }}
+        run: ${{ matrix.setup_deps }}
 
-    - name: Cache Zig
+      - name: Cache Zig
-      uses: actions/cache@v4
+        uses: actions/cache@v4
-      with:
+        with:
-        path: |
+          path: |
-          ~/.cache/zig
+            ~/.cache/zig
-          zig-cache
+            zig-cache
-        key: ${{ runner.os }}-${{ matrix.target }}-zig-${{ hashFiles('build.zig', 'build.zig.zon') }}
+          key: ${{ runner.os }}-${{ matrix.target }}-zig-${{ hashFiles('build.zig', 'build.zig.zon') }}
-        restore-keys: |
+          restore-keys: |
-          ${{ runner.os }}-${{ matrix.target }}-zig-
+            ${{ runner.os }}-${{ matrix.target }}-zig-
 
-    - name: Build for target
+      - name: Build for target
-      run: |
+        run: |
-        zig build -Doptimize=ReleaseSafe
+          zig build -Doptimize=ReleaseSafe
 
-        mv zig-out/bin/zigfetch zig-out/bin/zigfetch-${{ matrix.target }}
+          mv zig-out/bin/zigfetch zig-out/bin/zigfetch-${{ matrix.target }}
 
-    - name: Verify binary
+      - name: Verify binary
-      run: |
+        run: |
-        ls -la zig-out/bin/
+          ls -la zig-out/bin/
-        file zig-out/bin/zigfetch-${{ matrix.target }}
+          file zig-out/bin/zigfetch-${{ matrix.target }}
 
-    - name: Create archive
+      - name: Upload artifacts
-      run: |
+        uses: actions/upload-artifact@v4
-        tar -czf zigfetch-${{ matrix.target }}.tar.gz -C zig-out/bin zigfetch-${{ matrix.target }}
+        with:
-
+          name: zigfetch-${{ matrix.target }}
-    - name: Upload artifacts
+          path: zig-out/bin/zigfetch-${{ matrix.target }}
-      uses: actions/upload-artifact@v4
+          retention-days: 3
-      with:
-        name: zigfetch-${{ matrix.target }}
-        path: |
-          # zig-out/bin/zigfetch-${{ matrix.target }}
-          zigfetch-${{ matrix.target }}.tar.gz
-        retention-days: 3
 
   test:
     runs-on: ubuntu-latest
 
     steps:
-    - name: Checkout code
+      - name: Checkout code
-      uses: actions/checkout@v4
+        uses: actions/checkout@v4
 
-    - name: Setup Zig
+      - name: Setup Zig
-      uses: mlugg/setup-zig@v2
+        uses: mlugg/setup-zig@v2
-      with:
+        with:
-        version: 0.15.1
+          version: 0.15.1
 
-    - name: Setup dependencies
+      - name: Setup dependencies
-      run: |
+        run: |
-        sudo apt-get update
+          sudo apt-get update
-        sudo apt-get install -y libpci-dev
+          sudo apt-get install -y libpci-dev
 
-    - name: Run tests
+      - name: Run tests
-      run: |
+        run: |
-        zig test src/ascii.zig
+          zig test src/ascii.zig
-        zig test src/utils.zig
+          zig test src/utils.zig

.gitignore

@@ -1 +1,2 @@
-*zig-*
+*zig-*
+result

CONTRIBUTING.md

@@ -0,0 +1,18 @@
+# How to contribute to Zigfetch
+
+## Did you find a bug?
+
+- Do not open up a GitHub issue if the bug is a security vulnerability, refer to the [security policy](https://github.com/utox39/zigfetch/blob/main/SECURITY.md).
+- Ensure the bug was not already reported by searching on GitHub under [Issues](https://github.com/utox39/zigfetch/issues).
+- If you're unable to find an open issue addressing the problem, open a new one.
+
+## Do you want to make some changes to the code or documentation?
+
+1. Fork the repo.
+2. Create a new branch (because the `main` branch is protected).
+3. Commit and push the changes to the new branch.
+4. Open a pull request.
+
+---
+
+**Thank you for your contribution!**

README.md

@@ -2,19 +2,24 @@
 
 ![Zig](https://img.shields.io/badge/Zig-%23F7A41D.svg?style=flat&logo=zig&logoColor=white)
 ![GitHub Release](https://img.shields.io/github/v/release/utox39/zigfetch)
+![GitHub License](https://img.shields.io/github/license/utox39/zigfetch)
 ![GitHub Actions Workflow Status](https://img.shields.io/github/actions/workflow/status/utox39/zigfetch/build.yml)
 ![macOS](https://img.shields.io/badge/mac%20os-000000?style=flat&logo=macos&logoColor=F0F0F0)
 ![Linux](https://img.shields.io/badge/Linux-FCC624?style=flat&logo=linux&logoColor=black)
 
+|                     Default config                      |                     Custom config                     |
+| :-----------------------------------------------------: | :---------------------------------------------------: |
+| ![dafault-config](assets/screenshot-default-config.png) | ![custom-config](assets/screenshot-custom-config.png) |
+
 ---
 
--   [Description](#description)
+- [Description](#description)
--   [Requirements](#requirements)
+- [Requirements](#requirements)
--   [Installation](#installation)
+- [Installation](#installation)
--   [Usage](#usage)
+- [Usage](#usage)
-    -   [Configuration](#configuration)
+  - [Configuration](#configuration)
--   [Roadtrip](#roadtrip)
+- [Roadtrip](#roadtrip)
--   [Contributing](#contributing)
+- [Contributing](#contributing)
 
 ## Description
 
@@ -22,15 +27,17 @@ Zigfetch is a minimal [neofetch](https://github.com/dylanaraps/neofetch)/[fastfe
 
 ## Requirements
 
--   \>= [zig v0.15.1](https://ziglang.org/)
+- \>= [zig v0.15.2](https://ziglang.org/)
 
 ### Linux only
 
--   [libpci](https://github.com/pciutils/pciutils)
+- [libpci](https://github.com/pciutils/pciutils)
 
 ## Installation
 
-```console
+### Build from source
+
+```bash
 # Clone the repo
 $ git clone https://github.com/utox39/zigfetch.git
 
@@ -44,10 +51,22 @@ $ zig build -Doptimize=ReleaseSafe
 $ mv ./zig-out/zigfetch ~/bin/
 ```
 
+### Via [Homebrew](https://brew.sh/)
+
+```bash
+brew install utox39/tap/zigfetch
+```
+
+### Other package managers
+
+[![Packaging status](https://repology.org/badge/vertical-allrepos/zigfetch.svg)](https://repology.org/project/zigfetch/versions)
+
+- nixpkg: Thanks to [@heisfer](https://github.com/heisfer)
+
 ## Usage
 
-```console
+```bash
-$ zigfetch
+zigfetch
 ```
 
 ### Configuration
@@ -55,33 +74,114 @@ $ zigfetch
 > [!IMPORTANT]
 > Currently, Zig does not have a built-in library for JSON validation via JSON schema, so it is very important to follow the pattern shown in the default configuration file ([config.json](https://github.com/utox39/zigfetch/blob/main/config.json)) to avoid errors
 
--   Create the config folder
+- Create the config folder
 
-```console
+```bash
-$ mkdir -p ~/.config/zigfetch
+mkdir -p ~/.config/zigfetch
 ```
 
--   Create the config file
+- Create the config file
 
-```console
+```bash
-$ cd ~/.config/zigfetch
+cd ~/.config/zigfetch
-$ touch config.json
+touch config.json
 ```
 
--   Or copy the default config (preferred way)
+- Or copy the default config (preferred way)
 
-```console
+```bash
-$ cp /path/to/zigfetch/config.json ~/.config/zigfetch/config.json
+cp /path/to/zigfetch/config.json ~/.config/zigfetch/config.json
+```
+
+#### Modules
+
+Available modules:
+
+- Os
+- Kernel
+- Uptime
+- Packages
+- Shell
+- Cpu
+- Gpu
+- Ram
+- Swap
+- Disk
+- Net
+- WM (Window Manager)
+- Terminal
+- Locale
+- Custom
+
+| Module type |      Linux      |          macOS           | Windows |
+| :---------: | :-------------: | :----------------------: | :-----: |
+|     os      |       Yes       |           Yes            |   WIP   |
+|   kernel    |       Yes       |           Yes            |   WIP   |
+|   uptime    |       Yes       |           Yes            |   WIP   |
+|  packages   |       Yes*      | Yes (Homebrew, Macports) |   WIP   |
+|    shell    | Yes (bash, zsh) |     Yes (bash, zsh)      |   WIP   |
+|     cpu     |       Yes       |           Yes            |   WIP   |
+|     gpu     |       Yes       | Yes (Apple Silicon only) |   WIP   |
+|     ram     |       Yes       |           Yes            |   WIP   |
+|    swap     |       Yes       |           Yes            |   WIP   |
+|    disk     |       Yes       |           Yes            |   WIP   |
+|     net     |       Yes       |           Yes            |   WIP   |
+|     wm      |       Yes       |           Yes            |   WIP   |
+|  terminal   |       Yes       |           Yes            |   WIP   |
+|   locale    |       Yes       |           Yes            |   WIP   |
+
+\*(flatpak, nix, dpkg, pacman, xbps)
+
+```json
+  "modules": [
+    {
+      "type": "os",
+      "key": "OS",
+      "key_color": "#5E81AC"
+    },
+    ...
+  ]
+```
+
+#### Custom module
+
+```json
+  "modules": [
+    {
+      "type": "custom",
+      "key": "-----------",
+      "key_color": "#5E81AC"
+    },
+    ...
+  ]
+```
+
+#### Custom ASCII art
+
+To use an ASCII art of your choice:
+
+```json
+"ascii_abs_path": "absolute_path/to/your/ascii_art.txt"
+```
+
+Don't use the `~` character.
+
+#### Username and Hostname color
+
+To change the Username and Hostname color (HEX colors only):
+
+```json
+"username_hostname_color": "#5E81AC"
 ```
 
 ## Roadtrip
 
--   [ ] Add ASCII art for each operating system and Linux distro
+- [ ] Add ASCII art for each operating system and Linux distro
--   [x] Add GPU info for Linux
+- [x] Add GPU info for Linux
--   [ ] Add packages info for Linux
+- [x] Add packages info for Linux
--   [x] Add user customization
+- [x] Add user customization
--   [ ] Add support for Windows
+- [ ] Add support for Windows
 
 ## Contributing
 
-If you would like to contribute to this project just create a pull request which I will try to review as soon as possible.
+Please see [CONTIBUTING](https://github.com/utox39/zigfetch/blob/main/CONTRIBUTING.md). Thanks!

build.zig.zon

@@ -10,7 +10,7 @@
 
     // This is a [Semantic Version](https://semver.org/).
     // In a future version of Zig it will be used for package deduplication.
-    .version = "0.22.0",
+    .version = "0.25.0",
 
     // Together with name, this represents a globally unique package
     // identifier. This field is generated by the Zig toolchain when the
@@ -28,7 +28,7 @@
 
     // Tracks the earliest Zig version that the package considers to be a
     // supported use case.
-    .minimum_zig_version = "0.15.1",
+    .minimum_zig_version = "0.15.2",
 
     // This field is optional.
     // Each dependency must either provide a `url` and `hash`, or a `path`.

default.nix

@@ -0,0 +1,20 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.stdenv.mkDerivation {
+  pname = "zigfetch";
+  version = "0.25.0";
+
+  src = ./.;
+
+  nativeBuildInputs = with pkgs; [
+    zig.hook
+  ];
+
+  buildInputs = with pkgs; [
+    pciutils
+  ];
+
+  zigBuildFlags = [
+    "-Doptimize=ReleaseSafe"
+  ];
+}

shell.nix

@@ -0,0 +1,13 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+let
+  unstable = import (builtins.fetchTarball {
+    url = "https://github.com/NixOS/nixpkgs/archive/nixos-unstable.tar.gz";
+  }) {};
+in
+pkgs.mkShell {
+  buildInputs = [
+    unstable.zig
+    pkgs.pciutils
+  ];
+}

src/ascii.zig

@@ -72,9 +72,10 @@ pub fn printAsciiAndModules(allocator: std.mem.Allocator, ascii_art_path: ?[]u8,
 
     var ascii_art_data: []const u8 = undefined;
     if (ascii_art_path) |ascii| {
-        var ascii_file = try std.fs.cwd().openFile(ascii, .{});
+        const ascii_file = try std.fs.cwd().openFile(ascii, .{ .mode = .read_only });
         defer ascii_file.close();
-        ascii_art_data = try ascii_file.readToEndAlloc(allocator, std.math.maxInt(usize));
+        const file_size = (try ascii_file.stat()).size;
+        ascii_art_data = try utils.readFile(allocator, ascii_file, file_size);
     } else {
         ascii_art_data = @embedFile("./assets/ascii/guy_fawks.txt");
     }

src/config.zig

@@ -1,5 +1,6 @@
 const std = @import("std");
 const ascii = @import("ascii.zig");
+const utils = @import("utils.zig");
 
 pub const Module = struct {
     type: []u8,
@@ -25,6 +26,7 @@ pub const ModuleType = enum {
     swap,
     disk,
     net,
+    wm,
     terminal,
     locale,
     custom,
@@ -51,6 +53,7 @@ pub fn getModulesTypes(allocator: std.mem.Allocator, config: ?std.json.Parsed(Co
             if (module_enum) |m| {
                 try modules_list.append(m);
             } else {
+                modules_list.deinit();
                 return error.InvalidModule;
             }
         }
@@ -66,14 +69,16 @@ pub fn readConfigFile(allocator: std.mem.Allocator) !?std.json.Parsed(Config) {
     const config_abs_path = try std.mem.concat(allocator, u8, &.{ home, "/.config/zigfetch/config.json" });
     defer allocator.free(config_abs_path);
 
-    const file = std.fs.openFileAbsolute(config_abs_path, .{ .mode = .read_only }) catch |err| switch (err) {
+    const config_file = std.fs.openFileAbsolute(config_abs_path, .{ .mode = .read_only }) catch |err| switch (err) {
         error.FileNotFound => return null,
         else => return err,
     };
-    defer file.close();
+    defer config_file.close();
 
-    const data = try file.readToEndAlloc(allocator, std.math.maxInt(usize));
+    const file_size = (try config_file.stat()).size;
-    defer allocator.free(data);
 
-    return try std.json.parseFromSlice(Config, allocator, data, .{ .allocate = .alloc_always });
+    const config_data = try utils.readFile(allocator, config_file, file_size);
+    defer allocator.free(config_data);
+
+    return try std.json.parseFromSlice(Config, allocator, config_data, .{ .allocate = .alloc_always });
 }

src/formatters.zig

@@ -20,6 +20,7 @@ pub const formatters = [_]*const fn (allocator: std.mem.Allocator, key: []const
     &getFormattedSwapInfo,
     &getFormattedDiskInfo,
     &getFormattedNetInfo,
+    &getFormattedWindowManagerInfo,
     &getFormattedTerminalNameInfo,
     &getFormattedLocaleInfo,
     &getFormattedCustom,
@@ -37,6 +38,7 @@ pub const default_formatters = [_]*const fn (allocator: std.mem.Allocator) anyer
     &getDefaultFormattedSwapInfo,
     &getDefaultFormattedDiskInfo,
     &getDefaultFormattedNetInfo,
+    &getDefaultFormattedWindowManagerInfo,
     &getDefaultFormattedTerminalNameInfo,
     &getDefaultFormattedLocaleInfo,
 };
@@ -98,13 +100,9 @@ pub fn getDefaultFormattedPackagesInfo(allocator: std.mem.Allocator) !Result {
 }
 
 pub fn getFormattedPackagesInfo(allocator: std.mem.Allocator, key: []const u8, key_color: []const u8) !Result {
-    if (builtin.os.tag == .macos) {
+    const packages_info = try detection.packages.getPackagesInfo(allocator);
-        const packages_info = try detection.packages.getPackagesInfo(allocator);
+    defer allocator.free(packages_info);
-        defer allocator.free(packages_info);
+    return Result{ .string = try std.fmt.allocPrint(allocator, "{s}{s}:{s}{s}", .{ key_color, key, ascii.Reset, packages_info }) };
-        return Result{ .string = try std.fmt.allocPrint(allocator, "{s}{s}:{s}{s}", .{ key_color, key, ascii.Reset, packages_info }) };
-    } else if (builtin.os.tag == .linux) {
-        return Result{ .string = try std.fmt.allocPrint(allocator, "{s}{s}:{s} WIP", .{ key_color, key, ascii.Reset }) };
-    }
 }
 
 pub fn getDefaultFormattedShellInfo(allocator: std.mem.Allocator) !Result {
@@ -192,6 +190,16 @@ pub fn getFormattedDiskInfo(allocator: std.mem.Allocator, key: []const u8, key_c
     return Result{ .string = try std.fmt.allocPrint(allocator, "{s}{s} ({s}):{s} {d:.2} / {d:.2} GB ({}%)", .{ key_color, key, disk_info.disk_path, ascii.Reset, disk_info.disk_usage, disk_info.disk_size, disk_info.disk_usage_percentage }) };
 }
 
+pub fn getDefaultFormattedWindowManagerInfo(allocator: std.mem.Allocator) !Result {
+    return try getFormattedWindowManagerInfo(allocator, "WM", ascii.Yellow);
+}
+
+pub fn getFormattedWindowManagerInfo(allocator: std.mem.Allocator, key: []const u8, key_color: []const u8) !Result {
+    const wm = try detection.system.getWindowManagerInfo(allocator);
+    defer allocator.free(wm);
+    return Result{ .string = try std.fmt.allocPrint(allocator, "{s}{s}:{s} {s}", .{ key_color, key, ascii.Reset, wm }) };
+}
+
 pub fn getDefaultFormattedTerminalNameInfo(allocator: std.mem.Allocator) !Result {
     return try getFormattedTerminalNameInfo(allocator, "Terminal", ascii.Yellow);
 }

src/linux/hardware.zig

@@ -1,4 +1,5 @@
 const std = @import("std");
+const utils = @import("../utils.zig");
 const c_unistd = @cImport(@cInclude("unistd.h"));
 const c_statvfs = @cImport(@cInclude("sys/statvfs.h"));
 const c_libpci = @cImport(@cInclude("pci/pci.h"));
@@ -44,9 +45,16 @@ pub fn getCpuInfo(allocator: std.mem.Allocator) !CpuInfo {
 
     // Reads /proc/cpuinfo
     const cpuinfo_path = "/proc/cpuinfo";
-    var file = try std.fs.cwd().openFile(cpuinfo_path, .{});
+    const cpuinfo_file = try std.fs.cwd().openFile(cpuinfo_path, .{ .mode = .read_only });
-    defer file.close();
+    defer cpuinfo_file.close();
-    const cpuinfo_data = try file.readToEndAlloc(allocator, std.math.maxInt(usize));
+
+    // NOTE: procfs is a pseudo-filesystem, so it is not possible to determine the size of a file
+    // https://docs.kernel.org/filesystems/proc.html
+    // https://en.wikipedia.org/wiki/Procfs
+    //
+    // Only the first section (core 0) will be parsed
+    // 512 is more than enough
+    const cpuinfo_data = try utils.readFile(allocator, cpuinfo_file, 512);
     defer allocator.free(cpuinfo_data);
 
     // Parsing /proc/cpuinfo
@@ -77,6 +85,7 @@ pub fn getCpuInfo(allocator: std.mem.Allocator) !CpuInfo {
 
     var cpu_max_freq: f32 = 0.0;
 
+    // NOTE: this is the preferred approach beacause it is the most accurate
     const cpuinfo_max_freq_path = "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq";
     var cmf_exists: bool = true;
 
@@ -89,14 +98,13 @@ pub fn getCpuInfo(allocator: std.mem.Allocator) !CpuInfo {
 
     if (cmf_exists) {
         // Reads /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
-        var file2 = try std.fs.cwd().openFile(cpuinfo_max_freq_path, .{});
+        const maxfreq_file = try std.fs.cwd().openFile(cpuinfo_max_freq_path, .{ .mode = .read_only });
-
+        defer maxfreq_file.close();
-        defer file2.close();
+        const maxfreq_data = try utils.readFile(allocator, maxfreq_file, 32);
-        const cpuinfo_max_freq_data = try file2.readToEndAlloc(allocator, std.math.maxInt(usize));
+        defer allocator.free(maxfreq_data);
-        defer allocator.free(cpuinfo_max_freq_data);
 
         // Parsing /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
-        const trimmed = std.mem.trim(u8, cpuinfo_max_freq_data, " \n\r");
+        const trimmed = std.mem.trim(u8, maxfreq_data, " \n\r");
         const cpu_max_freq_khz: f32 = try std.fmt.parseFloat(f32, trimmed);
         cpu_max_freq = cpu_max_freq_khz / 1_000_000;
     } else {
@@ -203,9 +211,16 @@ fn parseGpuName(allocator: std.mem.Allocator, name: []u8) !?[]u8 {
 pub fn getRamInfo(allocator: std.mem.Allocator) !RamInfo {
     // Reads /proc/meminfo
     const meminfo_path = "/proc/meminfo";
-    const file = try std.fs.cwd().openFile(meminfo_path, .{});
+    const meminfo_file = try std.fs.cwd().openFile(meminfo_path, .{ .mode = .read_only });
-    defer file.close();
+    defer meminfo_file.close();
-    const meminfo_data = try file.readToEndAlloc(allocator, std.math.maxInt(usize));
+
+    // NOTE: procfs is a pseudo-filesystem, so it is not possible to determine the size of a file
+    // https://docs.kernel.org/filesystems/proc.html
+    // https://en.wikipedia.org/wiki/Procfs
+    //
+    // We only need to read the first few lines
+    // 512 is more than enough
+    const meminfo_data = try utils.readFile(allocator, meminfo_file, 512);
     defer allocator.free(meminfo_data);
 
     // Parsing /proc/meminfo
@@ -265,9 +280,16 @@ pub fn getRamInfo(allocator: std.mem.Allocator) !RamInfo {
 pub fn getSwapInfo(allocator: std.mem.Allocator) !?SwapInfo {
     // Reads /proc/meminfo
     const meminfo_path = "/proc/meminfo";
-    const file = try std.fs.cwd().openFile(meminfo_path, .{});
+    const meminfo_file = try std.fs.cwd().openFile(meminfo_path, .{ .mode = .read_only });
-    defer file.close();
+    defer meminfo_file.close();
-    const meminfo_data = try file.readToEndAlloc(allocator, std.math.maxInt(usize));
+
+    // NOTE: procfs is a pseudo-filesystem, so it is not possible to determine the size of a file
+    // https://docs.kernel.org/filesystems/proc.html
+    // https://en.wikipedia.org/wiki/Procfs
+    //
+    // We only need to read the first few lines
+    // 512 is ok
+    const meminfo_data = try utils.readFile(allocator, meminfo_file, 512);
     defer allocator.free(meminfo_data);
 
     // Parsing /proc/meminfo

src/linux/linux.zig

@@ -2,3 +2,4 @@ pub const hardware = @import("./hardware.zig");
 pub const network = @import("./network.zig");
 pub const system = @import("./system.zig");
 pub const user = @import("./user.zig");
+pub const packages = @import("./packages.zig");

src/linux/packages.zig

@@ -0,0 +1,242 @@
+const std = @import("std");
+const utils = @import("../utils.zig");
+
+pub fn getPackagesInfo(allocator: std.mem.Allocator) ![]const u8 {
+    var packages_info = std.array_list.Managed(u8).init(allocator);
+    defer packages_info.deinit();
+
+    const flatpak_packages = countFlatpakPackages() catch |err| if (err == error.FileNotFound) 0 else return err;
+    const nix_packages = countNixPackages(allocator) catch 0;
+    const dpkg_packages = countDpkgPackages(allocator) catch |err| if (err == error.FileNotFound) 0 else return err;
+    const pacman_packages = countPacmanPackages() catch |err| if (err == error.FileNotFound) 0 else return err;
+    const xbps_packages = countXbpsPackages(allocator) catch |err| if (err == error.FileNotFound) 0 else return err;
+
+    var buffer: [32]u8 = undefined;
+
+    if (nix_packages > 0) {
+        try packages_info.appendSlice(try std.fmt.bufPrint(&buffer, " Nix: {d}", .{nix_packages}));
+    }
+
+    if (flatpak_packages > 0) {
+        try packages_info.appendSlice(try std.fmt.bufPrint(&buffer, " Flatpak: {d}", .{flatpak_packages}));
+    }
+
+    if (dpkg_packages > 0) {
+        try packages_info.appendSlice(try std.fmt.bufPrint(&buffer, " Dpkg: {d}", .{dpkg_packages}));
+    }
+
+    if (pacman_packages > 0) {
+        try packages_info.appendSlice(try std.fmt.bufPrint(&buffer, " Pacman: {d}", .{pacman_packages}));
+    }
+
+    if (xbps_packages > 0) {
+        try packages_info.appendSlice(try std.fmt.bufPrint(&buffer, " Xbps: {d}", .{xbps_packages}));
+    }
+
+    return try allocator.dupe(u8, packages_info.items);
+}
+
+fn countFlatpakPackages() !usize {
+    const flatpak_apps = try countFlatpakApps();
+    const flatpak_runtimes = try countFlatpakRuntimes();
+
+    return flatpak_apps + flatpak_runtimes;
+}
+
+fn countFlatpakApps() !usize {
+    var dir = try std.fs.openDirAbsolute("/var/lib/flatpak/app/", .{ .iterate = true });
+    defer dir.close();
+
+    var iter = dir.iterate();
+
+    var count: usize = 0;
+
+    while (try iter.next()) |e| {
+        if (e.kind != .directory) continue;
+
+        var sub_dir = try dir.openDir(e.name, .{});
+        defer sub_dir.close();
+
+        var current = sub_dir.openDir("current", .{}) catch continue;
+        defer current.close();
+
+        // If `current` was opened successfully, increment the count
+        count += 1;
+    }
+
+    return count;
+}
+
+fn countFlatpakRuntimes() !usize {
+    var dir = try std.fs.openDirAbsolute("/var/lib/flatpak/runtime/", .{ .iterate = true });
+    defer dir.close();
+
+    var iter = dir.iterate();
+
+    var counter: usize = 0;
+
+    while (try iter.next()) |e| {
+        if (std.mem.endsWith(u8, e.name, ".Locale") or std.mem.endsWith(u8, e.name, ".Debug")) continue;
+
+        var arch_dir = try dir.openDir(e.name, .{ .iterate = true });
+        defer arch_dir.close();
+        var arch_iter = arch_dir.iterate();
+        while (try arch_iter.next()) |arch_e| {
+            if (arch_e.kind != .directory) continue;
+
+            var sub_dir = try arch_dir.openDir(arch_e.name, .{ .iterate = true });
+            defer sub_dir.close();
+            var sub_iter = sub_dir.iterate();
+            while (try sub_iter.next()) |_| {
+                counter += 1;
+            }
+        }
+    }
+
+    return counter;
+}
+
+fn countNixPackages(allocator: std.mem.Allocator) !usize {
+    // `/run/current-system` is a sym-link, so we need to obtein the real path
+    const real_path = try std.fs.realpathAlloc(allocator, "/run/current-system");
+    defer allocator.free(real_path);
+
+    var hash: [32]u8 = undefined;
+    std.crypto.hash.Blake3.hash(real_path, &hash, .{});
+    const hash_hex = try std.fmt.allocPrint(allocator, "{x}", .{hash});
+    defer allocator.free(hash_hex);
+
+    var count: usize = 0;
+
+    // Inspired by https://github.com/fastfetch-cli/fastfetch/blob/608382109cda6623e53f318e8aced54cf8e5a042/src/detection/packages/packages_nix.c#L81
+    count = checkNixCache(allocator, hash_hex) catch |err| switch (err) {
+        error.FileNotFound, error.InvalidCache => {
+            // nix-store --query --requisites /run/current-system | wc -l
+            const result = try std.process.Child.run(.{ .allocator = allocator, .argv = &[_][]const u8{
+                "sh",
+                "-c",
+                "nix-store --query --requisites /run/current-system | wc -l",
+            } });
+
+            const result_trimmed = std.mem.trim(u8, result.stdout, "\n");
+            defer allocator.free(result.stdout);
+            defer allocator.free(result.stderr);
+
+            count = try std.fmt.parseInt(usize, result_trimmed, 10);
+
+            try writeNixCache(allocator, hash_hex, count);
+
+            return count;
+        },
+        else => return err,
+    };
+
+    return count;
+}
+
+fn getNixCachePath(allocator: std.mem.Allocator) ![]const u8 {
+    var cache_dir_path = std.process.getEnvVarOwned(allocator, "XDG_CACHE_HOME") catch try allocator.dupe(u8, "");
+    if (cache_dir_path.len == 0) {
+        allocator.free(cache_dir_path);
+        const home = try std.process.getEnvVarOwned(allocator, "HOME");
+        defer allocator.free(home);
+        cache_dir_path = try std.fs.path.join(allocator, &.{ home, ".cache", "zigfetch", "nix" });
+    } else {
+        cache_dir_path = try std.fs.path.join(allocator, &.{ cache_dir_path, "zigfetch", "nix" });
+    }
+
+    return cache_dir_path;
+}
+
+fn writeNixCache(allocator: std.mem.Allocator, hash: []const u8, count: usize) !void {
+    const cache_dir_path = try getNixCachePath(allocator);
+    defer allocator.free(cache_dir_path);
+
+    try std.fs.cwd().makePath(cache_dir_path);
+    var cache_dir = try std.fs.cwd().openDir(cache_dir_path, .{});
+    defer cache_dir.close();
+    var cache_file = try cache_dir.createFile("nix_cache", .{ .truncate = true });
+    defer cache_file.close();
+
+    const cache_content = try std.fmt.allocPrint(allocator, "{s}\n{d}", .{ hash, count });
+    defer allocator.free(cache_content);
+    try cache_file.writeAll(cache_content);
+}
+
+fn checkNixCache(allocator: std.mem.Allocator, hash: []const u8) !usize {
+    const cache_dir_path = try getNixCachePath(allocator);
+    defer allocator.free(cache_dir_path);
+    var cache_dir = try std.fs.cwd().openDir(cache_dir_path, .{});
+    defer cache_dir.close();
+
+    var cache_file = try cache_dir.openFile("nix_cache", .{ .mode = .read_only });
+    const cache_size = (try cache_file.stat()).size;
+    const cache_content = try utils.readFile(allocator, cache_file, cache_size);
+    defer allocator.free(cache_content);
+
+    var cache_iter = std.mem.splitScalar(u8, cache_content, '\n');
+
+    const hash_needle = cache_iter.next().?;
+    if (!std.mem.eql(u8, hash, hash_needle)) {
+        return error.InvalidCache;
+    }
+
+    // The next element in the split is the package count
+    return std.fmt.parseInt(usize, cache_iter.next().?, 10);
+}
+
+fn countDpkgPackages(allocator: std.mem.Allocator) !usize {
+    const dpkg_status_path = "/var/lib/dpkg/status";
+    const dpkg_file = try std.fs.cwd().openFile(dpkg_status_path, .{ .mode = .read_only });
+    defer dpkg_file.close();
+    const file_size = (try dpkg_file.stat()).size;
+
+    const content = try utils.readFile(allocator, dpkg_file, file_size);
+    defer allocator.free(content);
+
+    var count: usize = 0;
+    var iter = std.mem.splitSequence(u8, content, "\n\n");
+    // TODO: find a way to avoid this loop
+    while (iter.next()) |_| {
+        count += 1;
+    }
+
+    // Subtruct 1 to remove an useless line
+    return count - 1;
+}
+
+fn countPacmanPackages() !usize {
+    // Subtruct 1 to remove `ALPM_DB_VERSION` from the count
+    return try utils.countEntries("/var/lib/pacman/local") - 1;
+}
+
+fn countXbpsPackages(allocator: std.mem.Allocator) !usize {
+    var dir = try std.fs.openDirAbsolute("/var/db/xbps/", .{ .iterate = true });
+    defer dir.close();
+
+    var count: usize = 0;
+
+    var dir_iter = dir.iterate();
+
+    while (try dir_iter.next()) |e| {
+        if ((e.kind == .file) and std.mem.startsWith(u8, e.name, "pkgdb-")) {
+            const pkgdb_file = try dir.openFile(e.name, .{ .mode = .read_only });
+            defer pkgdb_file.close();
+            const file_size = (try pkgdb_file.stat()).size;
+
+            const content = try utils.readFile(allocator, pkgdb_file, file_size);
+            defer allocator.free(content);
+
+            var file_iter = std.mem.splitSequence(u8, content, "<string>installed</string>");
+            // TODO: find a way to avoid this loop
+            while (file_iter.next()) |_| {
+                count += 1;
+            }
+
+            break;
+        }
+    }
+
+    // Subtruct 1 to remove an useless line
+    return count - 1;
+}

src/linux/system.zig

@@ -1,4 +1,5 @@
 const std = @import("std");
+const utils = @import("../utils.zig");
 const c_sysinfo = @cImport(@cInclude("sys/sysinfo.h"));
 const c_utsname = @cImport(@cInclude("sys/utsname.h"));
 
@@ -77,9 +78,10 @@ pub fn getKernelInfo(allocator: std.mem.Allocator) !KernelInfo {
 
 pub fn getOsInfo(allocator: std.mem.Allocator) ![]u8 {
     const os_release_path = "/etc/os-release";
-    const file = try std.fs.cwd().openFile(os_release_path, .{});
+    const os_release_file = try std.fs.cwd().openFile(os_release_path, .{ .mode = .read_only });
-    defer file.close();
+    defer os_release_file.close();
-    const os_release_data = try file.readToEndAlloc(allocator, std.math.maxInt(usize));
+    const size = (try os_release_file.stat()).size;
+    const os_release_data = try utils.readFile(allocator, os_release_file, size);
     defer allocator.free(os_release_data);
 
     var pretty_name: ?[]const u8 = null;
@@ -98,3 +100,56 @@ pub fn getOsInfo(allocator: std.mem.Allocator) ![]u8 {
 
     return try allocator.dupe(u8, pretty_name orelse "Unknown");
 }
+
+pub fn getWindowManagerInfo(allocator: std.mem.Allocator) ![]const u8 {
+    var dir = try std.fs.cwd().openDir("/proc/", .{ .iterate = true });
+    defer dir.close();
+
+    var wm_name: ?[]const u8 = null;
+
+    var iter = dir.iterate();
+    wm_name = outer: {
+        while (try iter.next()) |entry| {
+            if (entry.kind != .directory) continue;
+
+            // Check if the entry name is numeric
+            _ = std.fmt.parseInt(i32, entry.name, 10) catch continue;
+
+            var buf: [1024]u8 = undefined;
+            const file_name = try std.fmt.bufPrint(&buf, "/proc/{s}/comm", .{entry.name});
+            const file = try std.fs.cwd().openFile(file_name, .{ .mode = .read_only });
+            defer file.close();
+
+            // NOTE: https://stackoverflow.com/questions/23534263/what-is-the-maximum-allowed-limit-on-the-length-of-a-process-name
+            const proc_name = try utils.readFile(allocator, file, 16);
+            defer allocator.free(proc_name);
+
+            const proc_name_trimmed = std.mem.trim(u8, proc_name, "\n");
+
+            const supported_wms: [9][]const u8 = .{
+                "i3", // https://i3wm.org/
+                // "i3gaps", // TODO: find a way to recognize i3gaps
+                "sway", // https://swaywm.org/
+                // "swayfx", // TODO: find a way to recognize swayfx
+                "niri", // https://github.com/YaLTeR/niri
+                "dwm", // https://dwm.suckless.org/
+                // "qtile", // TODO: find a way to recognize qtile
+                "awesome", // https://awesomewm.org/
+                "river", // https://codeberg.org/river/river
+                "hyprland", // https://hypr.land/
+                "bspwm", // https://github.com/baskerville/bspwm
+                "openbox", // https://openbox.org/
+            };
+
+            inline for (supported_wms) |wm| {
+                if (std.ascii.eqlIgnoreCase(wm, proc_name_trimmed)) {
+                    break :outer try allocator.dupe(u8, proc_name_trimmed);
+                }
+            }
+        }
+
+        break :outer null;
+    };
+
+    return wm_name orelse allocator.dupe(u8, "Unknown");
+}

src/macos/packages.zig

@@ -1,5 +1,5 @@
 const std = @import("std");
-const utils = @import("utils.zig");
+const utils = @import("../utils.zig");
 
 pub fn getPackagesInfo(allocator: std.mem.Allocator) ![]const u8 {
     var packages_info = std.array_list.Managed(u8).init(allocator);

src/macos/system.zig

@@ -128,3 +128,68 @@ pub fn getOsInfo(allocator: std.mem.Allocator) ![]u8 {
 
     return os_info;
 }
+
+pub fn getWindowManagerInfo(allocator: std.mem.Allocator) ![]const u8 {
+    var name = [_]c_int{ c_sysctl.CTL_KERN, c_sysctl.KERN_PROC, c_sysctl.KERN_PROC_ALL };
+    var size: usize = 0;
+
+    // First call to get the dimension
+    if (c_sysctl.sysctl(&name, name.len, null, &size, null, 0) != 0) {
+        return error.SysctlFailed;
+    }
+
+    const buffer: []u8 = try allocator.alloc(u8, size);
+    defer allocator.free(buffer);
+
+    // Second call to retrieve process data
+    if (c_sysctl.sysctl(&name, name.len, buffer.ptr, &size, null, 0) != 0) {
+        return error.SysctlFailed;
+    }
+
+    // Ensure the buffer size is valid
+    if (size % @sizeOf(c_sysctl.struct_kinfo_proc) != 0) {
+        return error.InvalidBufferSize;
+    }
+
+    const kinfo_list = std.mem.bytesAsSlice(c_sysctl.struct_kinfo_proc, buffer);
+
+    var wm_name: ?[]const u8 = null;
+
+    const supported_wms: [6][]const u8 = .{
+        "aerospace",
+        "amethyst",
+        "chunkwm",
+        "rectangle",
+        "spectacle",
+        "yabai",
+    };
+
+    wm_name = outer: {
+        for (kinfo_list) |kinfo| {
+            const pid = kinfo.kp_proc.p_pid;
+            if (pid <= 0) continue;
+
+            // Gets the process pathname
+            var pathbuf: [c_libproc.PROC_PIDPATHINFO_MAXSIZE]u8 = undefined;
+            // c_libproc.proc_pidpath saves the process name in `pathbuf` and returns the len
+            const path_len = @as(usize, @intCast(c_libproc.proc_pidpath(pid, &pathbuf, pathbuf.len)));
+            const proc_pathname = if (path_len > 0) try allocator.dupe(u8, pathbuf[0..@intCast(path_len)]) else try allocator.dupe(u8, "unknown");
+            defer allocator.free(proc_pathname);
+
+            inline for (supported_wms) |wm| {
+                if (std.ascii.endsWithIgnoreCase(proc_pathname, wm)) {
+                    const basename = if (std.mem.lastIndexOfScalar(u8, proc_pathname, '/')) |index|
+                        proc_pathname[index + 1 ..]
+                    else
+                        proc_pathname;
+
+                    break :outer try allocator.dupe(u8, basename);
+                }
+            }
+        }
+
+        break :outer null;
+    };
+
+    return wm_name orelse allocator.dupe(u8, "Quartz Compositor");
+}

src/macos/utils.zig

@@ -23,17 +23,3 @@ pub fn cfTypeRefToZigString(allocator: std.mem.Allocator, cf_type_ref: c_iokit.C
 
     return allocator.realloc(buffer, actual_len);
 }
-
-pub fn countEntries(dir_path: []const u8) !usize {
-    var dir = try std.fs.openDirAbsolute(dir_path, .{ .iterate = true });
-    defer dir.close();
-
-    var count: usize = 0;
-    var iter = dir.iterate();
-
-    while (try iter.next()) |_| {
-        count += 1;
-    }
-
-    return count;
-}

src/utils.zig

@@ -114,3 +114,28 @@ test "getLongestAsciiArtRowLen" {
 
     try std.testing.expectEqual(40, try getLongestAsciiArtRowLen(rows[0..]));
 }
+
+pub fn readFile(allocator: std.mem.Allocator, file: std.fs.File, size: usize) ![]const u8 {
+    var file_buf = try allocator.alloc(u8, size);
+    defer allocator.free(file_buf);
+
+    const read = try file.read(file_buf);
+
+    const data = file_buf[0..read];
+
+    return allocator.dupe(u8, data);
+}
+
+pub fn countEntries(dir_path: []const u8) !usize {
+    var dir = try std.fs.openDirAbsolute(dir_path, .{ .iterate = true });
+    defer dir.close();
+
+    var count: usize = 0;
+    var iter = dir.iterate();
+
+    while (try iter.next()) |_| {
+        count += 1;
+    }
+
+    return count;
+}