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YosysHQ
prjtrellis
Python2022–2025
YosysHQ / prjtrellis

prjtrellis

Documenting the Lattice ECP5 bit-stream format.

5Distinct people
5Mentions
0Explicit recommenders
478GitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Documenting the Lattice ECP5 bit-stream format.

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year5 dated mentions

Observed mentions: 2022-01-07 20:34:59 UTC to 2025-05-30 23:48:01 UTC.

0122022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 2 mentions; 1 submissions, 1 comments20222023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 2 mentions; 1 submissions, 1 comments20232024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2025

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC211
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC211
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC000
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC101

What Hacker News says

5 sources
Yosys, the underlying compiler of ice studio, also targets the much bigger ECP5 FPGA, also by Lattice, which is called Project Trellis: https://github.com/YosysHQ/prjtrellis Yosys functions more like a software open source tool. So command line compiling. It also has a REPL. It is very quick compared to the commercial solutions. Especially around compile times which can take seconds instead of minutes. YMMV, but I think the consensus is that it's a lot more convenient to use. In general the hardware toolchains feel very ancient compared to software toolchains.
In Learning Verilog and FPGA
Nice! Internally we have a PCRE support on our code search and I regularly run a regex to find and fix these. I've also found a ton on opensource project which I've been trying to fix: https://github.com/YosysHQ/prjtrellis/pull/176 https://github.com/UWQuickstep/quickstep/pull/9 https://github.com/tensorflow/tensorflow/pull/51578 https://github.com/mono/mono/pull/21197 https://github.com/llvm/llvm-project/pull/335 https://github.com/PyCQA/baron/pull/156 https://github.com/dagwieers/pygments/pull/1 https://github.com/zhuyifei1999/guppy3/pull/12 https://github.com/pyusb/pyusb/pull/277 https://github.com/KhronosGroup/Vulkan-ValidationLayers/pull... It is indeed a very common mistake in Python, and can be very hard to debug. It bit me once and wasted a whole day for me, so I've been finding/fixing them ever since trying to save others the sam
Read the rest
e pain I went through. EDIT: I will point out that I've found this error in other non-Python code too, such as c++ (see the 2nd PR for example). Here's the regex for anyone curious: [([{]\s*\n?(\s*['"](\w)+['"],\n)+(\s*['"]\w+['"]\n)(\s*['"]\w+['"],\n)*
In 5% of 666 Python repos had comma typo bugs (inc V8, TensorFlow and PyTorch)

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