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title: "Thread: Yosys Issue"
slug: wsd-yosys-issue-52b4d230
route: /evidence/designing/project-template/threads/yosys-issue
section: reference
access: public
summary: 41 Discord messages from 📐 - Designing/📝-project-template/threads/yosys-issue.md.
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---

# Thread: Yosys Issue

Category: **📐 - Designing**
Parent channel: **#📝-project-template**
Thread ID: `1509285266941153461`

Messages: **41**

## message-1509289387740102656

**2026-05-27T20:17:11.278+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509289387740102656`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `21`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509289387740102656
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Reply/reference**
- https://discord.com/channels/1361349522684510449/1423348662318272592/1509285266941153461
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**Content**

```text

```

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## message-1509289394022907985

**2026-05-27T20:17:12.776+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509289394022907985`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509289394022907985
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
Dang, this really is an issue in Yosys then. After updating Yosys to 0.64 I saw similar issues in the LibreLane CI: https://github.com/librelane/librelane/pull/916
I dismissed them for now and didn't merge, hoping that the recent 0.65 release would rectify things, but it doesn't.
If you are able to create a Yosys-only reproducible, you could submit an issue upstream. If not, I'll try to create one tomorrow or simply explain the issue, perhaps someone has an idea what's going on.
```

**Embeds**

- Resolved media URL: https://github.com/librelane/librelane/pull/916
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    "color": "#1E2327",
    "description": "Updated nix-eda to 6.16.0\n\nUpdated Magic to 8.3.635\nUpdated Netgen to 1.5.318\nUpdated Yosys to 0.64\n\nUpdated yosys-eqy 0.64\nUpdated yosys-sby 0.64\nUpdated yosys-slang to 2026-03-25\nRemoved yosys-li...",
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    "title": "chore: update nix-eda to 6.16.0 by mole99 · Pull Request #916 · l...",
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## message-1509289463325393097

**2026-05-27T20:17:29.299+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509289463325393097`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `ChannelNameChange`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509289463325393097
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
Changed the channel name: Yosys Issue
```

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## message-1509289649556815902

**2026-05-27T20:18:13.7+00:00 — RebelMike (@rebelmike)**

- Message ID: `1509289649556815902`
- Author ID: `691780627338625077`
- Nickname: RebelMike
- User name: rebelmike
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509289649556815902
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
The yosys version that the build is using is 0.64:
` Yosys 0.64 (git sha1 d8dab5b32666564eca8e18f412973853ce006e61, clang++ 21.1.2 -fPIC -O3)`
```

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## message-1509289819627458770

**2026-05-27T20:18:54.248+00:00 — RebelMike (@rebelmike)**

- Message ID: `1509289819627458770`
- Author ID: `691780627338625077`
- Nickname: RebelMike
- User name: rebelmike
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509289819627458770
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
Or did you try it with 0.65 and that didn't fix it?
```

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## message-1509290410231726211

**2026-05-27T20:21:15.059+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509290410231726211`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509290410231726211
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
I tried 0.65 with the LibreLane CI: https://github.com/fossi-foundation/nix-eda/pull/69
```

**Reactions**

- Resolved media URL: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05_media/1f44d-27259.svg
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## message-1509290757213786264

**2026-05-27T20:22:37.786+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509290757213786264`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509290757213786264
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

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I could also update the wafer.space branch to nix-eda with Yosys 0.65, but it probably wouldn't help :)
```

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## message-1509291252615745566

**2026-05-27T20:24:35.899+00:00 — RebelMike (@rebelmike)**

- Message ID: `1509291252615745566`
- Author ID: `691780627338625077`
- Nickname: RebelMike
- User name: rebelmike
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509291252615745566
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
Fair enough, I guess we need to roll back to 0.63 until it is fixed, and work out how to report the issue.

In config.yaml if I set the DESIGN_NAME to `uart_tx` and remove chip_top and chip_core I still get the issue, so that is getting towards a small repro.  But I'm not quite sure how to then wrap that up into something I can report to yosys
```

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## message-1509292793108103301

**2026-05-27T20:30:43.181+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509292793108103301`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509292793108103301
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
Yes, I'll try overriding the Yosys version with 0.63 in the project template for now.
I think LibreLane should be able to create a standalone reproducible, as it does for OpenROAD. Maybe pyosys complicates things, but we'll see.
The easiest way would be to write a small Yosys script that reads the Verilog and reproduces the issue, but I'm not sure it will be that easy :)
```

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## message-1509293198332399776

**2026-05-27T20:32:19.794+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509293198332399776`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509293198332399776
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

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In any case, thanks Mike, for giving this a try and identifying the issue!
```

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## message-1509293715666243635

**2026-05-27T20:34:23.136+00:00 — RebelMike (@rebelmike)**

- Message ID: `1509293715666243635`
- Author ID: `691780627338625077`
- Nickname: RebelMike
- User name: rebelmike
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509293715666243635
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
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**Content**

````text
Ah - this may not be so hard to repro 😄
```
yosys> read_verilog src/uart_tx.v

1. Executing Verilog-2005 frontend: src/uart_tx.v
Parsing Verilog input from `src/uart_tx.v' to AST representation.
Generating RTLIL representation for module `\uart_tx'.
Successfully finished Verilog frontend.

yosys> check

2. Executing CHECK pass (checking for obvious problems).
Checking module uart_tx...
Warning: Wire uart_tx.\next_fsm_state$func$src/uart_tx.v:128$1.tx_en is used but has no driver.
Warning: Wire uart_tx.\next_fsm_state$func$src/uart_tx.v:128$1.$result [3] is used but has no driver.
Warning: Wire uart_tx.\next_fsm_state$func$src/uart_tx.v:128$1.$result [2] is used but has no driver.
Warning: Wire uart_tx.\next_fsm_state$func$src/uart_tx.v:128$1.$result [1] is used but has no driver.
Warning: Wire uart_tx.\next_fsm_state$func$src/uart_tx.v:128$1.$result [0] is used but has no driver.
Found and reported 5 problems.
```
````

**Reactions**

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## message-1509294825428484156

**2026-05-27T20:38:47.724+00:00 — RebelMike (@rebelmike)**

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- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509294825428484156
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
I'll raise a yosys issue
```

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---

## message-1509295197442277557

**2026-05-27T20:40:16.419+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509295197442277557`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509295197442277557
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
Awesome!
```

<details>
<summary>Other message metadata</summary>

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---

## message-1509297301959475460

**2026-05-27T20:48:38.175+00:00 — RebelMike (@rebelmike)**

- Message ID: `1509297301959475460`
- Author ID: `691780627338625077`
- Nickname: RebelMike
- User name: rebelmike
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509297301959475460
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
https://github.com/YosysHQ/yosys/issues/5911
```

**Embeds**

- Resolved media URL: https://github.com/YosysHQ/yosys/issues/5911
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    "color": "#1E2327",
    "description": "Version Yosys 0.64 (git sha1 d8dab5b, clang++ 21.1.2 -fPIC -O3) On which OS did this happen? Linux Reproduction Steps Run yosys, read and check the verilog: yosys> read_verilog src/uart_tx.v yos...",
    "fields": [],
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    "timestamp": null,
    "title": "Check command fails with undriven nets · Issue #5911 · YosysHQ/yosys",
    "url": "https://github.com/YosysHQ/yosys/issues/5911"
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]
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<details>
<summary>Other message metadata</summary>

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---

## message-1509297980438741064

**2026-05-27T20:51:19.937+00:00 — RebelMike (@rebelmike)**

- Message ID: `1509297980438741064`
- Author ID: `691780627338625077`
- Nickname: RebelMike
- User name: rebelmike
- Type: `Default`
- Edited: 2026-05-27T20:51:47.459+00:00
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509297980438741064
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
I tried to help them isolate by grabbing a couple of OSS CAD suite builds, it was present in a 0.63+ build, but not a 0.62+ (but I think OSS CAD suite might build off the dev branch so possibly the release 0.63 is ok)
```

**Reactions**

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- Resolved media URL: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05_media/3c7c17f3225f6e56f4dccd83f14383f2-73F83.png
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<summary>Reactions data</summary>

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---

## message-1509443993811943535

**2026-05-28T06:31:32.238+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509443993811943535`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509443993811943535
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
I've pushed an update to the project template that overrides Yosys with version 0.62: https://github.com/wafer-space/gf180mcu-project-template/pull/60/changes/9f23d7e3dad93aba1b9c8d15c748cc486014628a
However, before merging the PR I hope that the issue will be fixed upstream.
```

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<summary>Other message metadata</summary>

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---

## message-1509452380662403112

**2026-05-28T07:04:51.819+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509452380662403112`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509452380662403112
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
Well, something else fails with this older version. So we might just have to wait for a fix :)
```

**Reactions**

- Resolved media URL: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05_media/1f61e-7D23E.svg
- Resolved media URL: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05_media/49aaff687e56f04e7bbdedf0077bab75-7DDB4.png
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---

## message-1509633450376691902

**2026-05-28T19:04:22.203+00:00 — tnt (@246tnt)**

- Message ID: `1509633450376691902`
- Author ID: `596068704471482370`
- Nickname: tnt
- User name: 246tnt
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509633450376691902
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
@Leo Moser (mole99) I see you got CI working on the PR now ?
```

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<summary>Other message metadata</summary>

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---

## message-1509635676939751515

**2026-05-28T19:13:13.057+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509635676939751515`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509635676939751515
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
Yeah, it was already working before since the template does not trigger the regression in Yosys. When I backported Yosys to 0.62 something else broke, so I dropped that commit and am now waiting on a proper fix.
```

<details>
<summary>Other message metadata</summary>

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---

## message-1509646426374668288

**2026-05-28T19:55:55.922+00:00 — RebelMike (@rebelmike)**

- Message ID: `1509646426374668288`
- Author ID: `691780627338625077`
- Nickname: RebelMike
- User name: rebelmike
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509646426374668288
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
Yosys 0.63 looks to be working for me - that might be worth a try
```

<details>
<summary>Other message metadata</summary>

```json
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---

## message-1509648805010604143

**2026-05-28T20:05:23.033+00:00 — tnt (@246tnt)**

- Message ID: `1509648805010604143`
- Author ID: `596068704471482370`
- Nickname: tnt
- User name: 246tnt
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509648805010604143
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
@RebelMike Which versions of oss cad did you try  that was 0.63+?
```

<details>
<summary>Other message metadata</summary>

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---

## message-1509649273329811556

**2026-05-28T20:07:14.689+00:00 — RebelMike (@rebelmike)**

- Message ID: `1509649273329811556`
- Author ID: `691780627338625077`
- Nickname: RebelMike
- User name: rebelmike
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509649273329811556
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
20260331
```

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---

## message-1509650810873843712

**2026-05-28T20:13:21.268+00:00 — RebelMike (@rebelmike)**

- Message ID: `1509650810873843712`
- Author ID: `691780627338625077`
- Nickname: RebelMike
- User name: rebelmike
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509650810873843712
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
Ah hah, 20260307 fails
```

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<summary>Other message metadata</summary>

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---

## message-1509651023554154527

**2026-05-28T20:14:11.975+00:00 — RebelMike (@rebelmike)**

- Message ID: `1509651023554154527`
- Author ID: `691780627338625077`
- Nickname: RebelMike
- User name: rebelmike
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509651023554154527
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
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**Content**

```text
So regression very early in dev after 0.63 release
```

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<summary>Other message metadata</summary>

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---

## message-1509651746761347163

**2026-05-28T20:17:04.401+00:00 — tnt (@246tnt)**

- Message ID: `1509651746761347163`
- Author ID: `596068704471482370`
- Nickname: tnt
- User name: 246tnt
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509651746761347163
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
What's the reported hash ?
```

<details>
<summary>Other message metadata</summary>

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---

## message-1509653004653953175

**2026-05-28T20:22:04.306+00:00 — RebelMike (@rebelmike)**

- Message ID: `1509653004653953175`
- Author ID: `691780627338625077`
- Nickname: RebelMike
- User name: rebelmike
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509653004653953175
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
Yosys 0.63+87 (git sha1 2f1cdc2df, clang++ 18.1.8 -fPIC -O3)
```

<details>
<summary>Other message metadata</summary>

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## message-1509653239975514293

**2026-05-28T20:23:00.411+00:00 — tnt (@246tnt)**

- Message ID: `1509653239975514293`
- Author ID: `596068704471482370`
- Nickname: tnt
- User name: 246tnt
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509653239975514293
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

````text
```
commit e9442194f27140e3e80cb3bf407c3259d562c449
Author: likeamahoney <likeamahoney@gmail.com>
Date:   Fri Feb 27 20:42:40 2026 +0300

    support automatic lifetime qualifier on procedural variables
```
````

<details>
<summary>Other message metadata</summary>

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---

## message-1509653282078064680

**2026-05-28T20:23:10.449+00:00 — tnt (@246tnt)**

- Message ID: `1509653282078064680`
- Author ID: `596068704471482370`
- Nickname: tnt
- User name: 246tnt
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509653282078064680
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
this sounds like a possible culprit ?
```

<details>
<summary>Other message metadata</summary>

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---

## message-1509656323657044159

**2026-05-28T20:35:15.618+00:00 — tnt (@246tnt)**

- Message ID: `1509656323657044159`
- Author ID: `596068704471482370`
- Nickname: tnt
- User name: 246tnt
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509656323657044159
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

````text
```
0.62+119        04113eb95       bad     20260304
0.62+117        1d3f9b790       works   20260302
```
````

**Reactions**

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<summary>Reactions data</summary>

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<summary>Other message metadata</summary>

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---

## message-1509663342036258886

**2026-05-28T21:03:08.93+00:00 — tnt (@246tnt)**

- Message ID: `1509663342036258886`
- Author ID: `596068704471482370`
- Nickname: tnt
- User name: 246tnt
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509663342036258886
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
@Leo Moser (mole99) You coul dtry reverting that
```

<details>
<summary>Other message metadata</summary>

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---

## message-1509676427912544346

**2026-05-28T21:55:08.846+00:00 — tnt (@246tnt)**

- Message ID: `1509676427912544346`
- Author ID: `596068704471482370`
- Nickname: tnt
- User name: 246tnt
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509676427912544346
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
Confirmed. I reverted this on `master` and that fixed the issue.
```

<details>
<summary>Other message metadata</summary>

```json
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---

## message-1509682854135726150

**2026-05-28T22:20:40.977+00:00 — RebelMike (@rebelmike)**

- Message ID: `1509682854135726150`
- Author ID: `691780627338625077`
- Nickname: RebelMike
- User name: rebelmike
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509682854135726150
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
Thank you!  Hopefully Leo can confirm if reverting that fixes the various other failures that Librelane CI picked up: https://github.com/librelane/librelane/actions/runs/26505823629
```

**Embeds**

- Resolved media URL: https://github.com/librelane/librelane/actions/runs/26505823629
<details>
<summary>Embeds data</summary>

```json
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    "color": "#1E2327",
    "description": "ASIC implementation flow infrastructure, successor to OpenLane - chore: update nix-eda · librelane/librelane@3dec125",
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    "timestamp": null,
    "title": "chore: update nix-eda · librelane/librelane@3dec125",
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<summary>Other message metadata</summary>

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---

## message-1509809349244092446

**2026-05-29T06:43:19.761+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509809349244092446`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509809349244092446
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
Thanks for pinpointing the faulty commit!
```

<details>
<summary>Other message metadata</summary>

```json
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---

## message-1509809672948023427

**2026-05-29T06:44:36.938+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509809672948023427`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509809672948023427
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
Let's see if this works:

- https://github.com/fossi-foundation/nix-eda/pull/70
- https://github.com/librelane/librelane/pull/916

I also noticed a slight fmax regression as well, so I'll have to adjust the target frequency for some designs. But what can you do...
```

<details>
<summary>Other message metadata</summary>

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---

## message-1509816660658487296

**2026-05-29T07:12:22.938+00:00 — tnt (@246tnt)**

- Message ID: `1509816660658487296`
- Author ID: `596068704471482370`
- Nickname: tnt
- User name: 246tnt
- Type: `Default`
- Edited: 2026-05-29T07:12:29.325+00:00
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509816660658487296
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
Not done yet, but looking so far ...
```

<details>
<summary>Other message metadata</summary>

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---

## message-1509836462282117172

**2026-05-29T08:31:04.013+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509836462282117172`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509836462282117172
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
It seems that does the trick. Had to fix `CLOCK_PERIOD` slightly for two designs. `full_chip_sky130` now has issues which are likely due to a magic update, but I think those are valid issues. Looking into it.
```

<details>
<summary>Other message metadata</summary>

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</details>

---

## message-1509839111421296770

**2026-05-29T08:41:35.617+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509839111421296770`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509839111421296770
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
If this runs through I can properly rebase everything and finally update nix-eda in LibreLane again.

https://github.com/librelane/librelane/pull/916/changes/d867039ca70d301a784f5b65e206076372d635b0
```

<details>
<summary>Other message metadata</summary>

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</details>

---

## message-1509839927616082053

**2026-05-29T08:44:50.213+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509839927616082053`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509839927616082053
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
The issue with `full_chip_sky130` was in the power ports. The sky130 pads have a separate port for the bondpad. But LibreLane would short all of the global connections for it. Until now I somehow managed to convince magic to short them during extraction as well. Not sure if this was actually buggy behavior or not? With a recent magic update this does not work anymore, so I've properly implemented power/ground busses in LibreLane.
```

<details>
<summary>Other message metadata</summary>

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</details>

---

## message-1509840044213534750

**2026-05-29T08:45:18.012+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509840044213534750`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509840044213534750
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text

```

**Attachments**

- Resolved media URL: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05_media/message-B818F.txt
<details>
<summary>Attachments data</summary>

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---

## message-1509840109825032273

**2026-05-29T08:45:33.655+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509840109825032273`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509840109825032273
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
LVS now looks like this. Instead of a single `VCCD_PAD` there is now `VCCD_PAD[0]` and `VCCD_PAD[1]`, as it should be.
```

<details>
<summary>Other message metadata</summary>

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---

## message-1509880409511432323

**2026-05-29T11:25:41.849+00:00 — Leo Moser (mole99) (@mole99)**

- Message ID: `1509880409511432323`
- Author ID: `323371864074485771`
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- Discord message: https://discord.com/channels/1361349522684510449/1509285266941153461/1509880409511432323
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%8F%97%EF%B8%8F%20-%20Designing/project-template/yosys-issue/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/%F0%9F%93%90%20-%20Designing/%F0%9F%93%9D-project-template/yosys-issue/2026-05/2026-05.json

**Content**

```text
Merged, and I've updated the template: https://github.com/wafer-space/gf180mcu-project-template/pull/60
```

<details>
<summary>Other message metadata</summary>

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    "discriminator": "0000",
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    "roles": [
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---