Add fastfetch binary: system information fetcher by Copilot · Pull Request #69 · jiacai2050/zigcli

Copilot · 2026-03-16T07:21:51Z

Ports the fastfetch concept to Zig as a new fastfetch CLI binary in the toolkit.

What it shows

user@hostname
──────────────
OS:     Ubuntu 22.04.3 LTS x86_64
Kernel: 5.15.0-91-generic
Uptime: 2 hours, 30 mins
Shell:  bash
CPU:    Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
Memory: 5312 MiB / 15908 MiB

Implementation

src/bin/fastfetch.zig — new binary with platform-specific data collection:
- Linux: pure Zig, reads /proc/uptime, /proc/cpuinfo, /proc/meminfo, /etc/os-release — no extra library needed
- macOS: @cImport + linkLibC() for sysctl calls (kern.boottime, kern.osproductversion, machdep.cpu.brand_string, hw.memsize). The @cImport is guarded by a top-level comptime if (native_os == .macos) so Linux builds never touch those headers.
- Windows: skipped (returns null from makeCompileStep)
build.zig — registers fastfetch in the binary list; adds linkLibC() for macOS; returns null on Windows

Tests

Unit tests for the two pure helper functions: formatUptime (all four time-scale branches) and parseKbLine (/proc/meminfo line parser).

Original prompt

This section details on the original issue you should resolve

<issue_title>Port fastfetch</issue_title>
<issue_description>### Describe this problem

https://github.com/fastfetch-cli/fastfetch

Version

NA</issue_description>

Comments on the Issue (you are @copilot in this section)

Fixes Port fastfetch #68

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Co-authored-by: jiacai2050 <3848910+jiacai2050@users.noreply.github.com>

jiacai2050 · 2026-03-16T09:45:19Z

@copilot fix conflict.

…lot/port-fastfetch # Conflicts: # build.zig

Copilot · 2026-03-16T09:48:47Z

@copilot fix conflict.

Resolved in 0f0db40. build.zig now includes both "fastfetch" and "progress" in the binary list, with each binary's makeCompileStep entry preserved.

Copilot

Pull request overview

Adds a new fastfetch CLI binary to the Zig toolkit to print basic system information (OS, kernel, uptime, shell, CPU, memory), with Linux /proc-based collection and macOS sysctl-based collection, and wires it into the build.

Changes:

Introduces src/bin/fastfetch.zig implementing the fastfetch command plus unit tests for formatUptime and parseKbLine.
Registers fastfetch in build.zig and conditionally links libc for macOS builds.

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/bin/fastfetch.zig	New `fastfetch` binary implementation + helper-function tests.
build.zig	Adds `fastfetch` to the build and applies platform-specific build/link behavior.

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build.zig

+    } else if (std.mem.eql(u8, name, "fastfetch")) {
+        if (is_win) {
+            return null;
+        }
+        // macOS sysctl requires libc; Linux uses /proc and needs no extra library.
+        if (is_darwin) {
+            exe.linkLibC();
+        }


Expand fastfetch output with host model, disk usage, display resolution, battery, and theme. Add cross-platform C imports and correct framework linking on macOS. Improve CPU, memory, and uptime reporting to show more details and handle both Linux and macOS OS-specific fields. This change allows users to quickly view comprehensive hardware and OS information, motivating the update to facilitate troubleshooting and system inventory.

Introduce documentation for fastfetch, including usage examples, key features, and output demonstration. This provides new and existing users with a clear overview of fastfetch's capabilities and platform support, enhancing accessibility and understanding without requiring inspection of the source code.

Add "fastfetch" to the build blacklist to prevent compilation on non-Darwin systems. This change ensures platform-specific targets are handled consistently and avoids build errors caused by unsupported executables.

Show monitor refresh rate in resolution info on macOS, providing users a more accurate overview of display settings. Improves UX for those needing detailed screen specs.

Initial plan

9356924

Copilot AI assigned Copilot and jiacai2050 Mar 16, 2026

Copilot started work on behalf of jiacai2050 March 16, 2026 07:21 View session

Copilot AI and others added 2 commits March 16, 2026 07:38

Add fastfetch binary: system information fetcher

b99b97e

Co-authored-by: jiacai2050 <3848910+jiacai2050@users.noreply.github.com>

Use fs.cwd().openFile for absolute paths (Zig 0.15 API)

50427d8

Co-authored-by: jiacai2050 <3848910+jiacai2050@users.noreply.github.com>

Copilot AI changed the title ~~[WIP] Add port for fastfetch~~ Add fastfetch binary: system information fetcher Mar 16, 2026

Copilot AI requested a review from jiacai2050 March 16, 2026 07:44

Copilot finished work on behalf of jiacai2050 March 16, 2026 07:44

Copilot started work on behalf of jiacai2050 March 16, 2026 09:45 View session

Merge branch 'main' of https://github.com/jiacai2050/zigcli into copi…

0f0db40

…lot/port-fastfetch # Conflicts: # build.zig

Copilot finished work on behalf of jiacai2050 March 16, 2026 09:49

jiacai2050 marked this pull request as ready for review March 16, 2026 11:41

Copilot AI review requested due to automatic review settings March 16, 2026 11:42

Copilot started reviewing on behalf of jiacai2050 March 16, 2026 11:42 View session

Copilot AI reviewed Mar 16, 2026

View reviewed changes

build.zig

Comment on lines +248 to +255

} else if (std.mem.eql(u8, name, "fastfetch")) {

if (is_win) {

return null;

}

// macOS sysctl requires libc; Linux uses /proc and needs no extra library.

if (is_darwin) {

exe.linkLibC();

}

jiacai2050 added 4 commits March 16, 2026 20:46

feat(build): extend compile blacklist to include fastfetch

f87352e

Add "fastfetch" to the build blacklist to prevent compilation on non-Darwin systems. This change ensures platform-specific targets are handled consistently and avoids build errors caused by unsupported executables.

feat(resolution): Display refresh rate in resolution output

da5862b

Show monitor refresh rate in resolution info on macOS, providing users a more accurate overview of display settings. Improves UX for those needing detailed screen specs.

jiacai2050 force-pushed the copilot/port-fastfetch branch 2 times, most recently from 7892e70 to da5862b Compare March 16, 2026 13:06

jiacai2050 merged commit f668700 into main Mar 16, 2026
8 checks passed

jiacai2050 deleted the copilot/port-fastfetch branch March 16, 2026 13:08

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Add fastfetch binary: system information fetcher#69

Add fastfetch binary: system information fetcher#69
jiacai2050 merged 8 commits intomainfrom
copilot/port-fastfetch

Copilot AI commented Mar 16, 2026 •

edited

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What it shows

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Copilot AI commented Mar 16, 2026 •

edited

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