Questions tagged [plutus-playground]
Plutus Playground provides an environment for writing and testing smart contracts before they are released on the Cardano blockchain.
109
questions
10
votes
2
answers
111
views
Test-Focused EvaluatorTrace Monad?
Is there infrastructure for writing unit/integration tests for our contracts, without running the full playground? Is there a test-focused EvaluatorTrace monad, for example?
- 687
8
votes
3
answers
183
views
Deriving Show Compilation Error on Plutus Playground
I seem to be getting a compilation error when I try to compile any of the example files on my local host configuration for the Plutus Playground. The error is pictured here:
And basically it seems ...
- 81
8
votes
1
answer
130
views
Confused by compilation message in plutus playground (week 5 pioneer program)
This is part of my attempt at solving the first homework assignment of week 5 in the plutus pioneer program.
The rest of the unmodified file can be found here.
{-# INLINABLE mkPolicy #-}
-- This ...
- 1,557
8
votes
2
answers
503
views
Plutus Pioneer Program - Problem with plutus playground client
I'm setting up my environment to run the example from lecture #1 (Week01 auction)
All compilations went well but when I try the evaluate in the simulator I always receive:
interpreter Errors
...
- 81
7
votes
2
answers
560
views
I'm having issues with nix-shell
I keep getting this error, any thoughts? I have re-downloaded nix 3 times now and it's the same error as before. Not sure if it's the profiles or channels but this is what it gives me:
'''trying https:...
- 687
7
votes
2
answers
182
views
Plutus Pioneer Cohort 2 Lecture 3
I was going through the lecture on Youtube and this is the one with Vesting example where:
wallet 1 gifts 20 ADA to wallet 2 in 2 different slots
wallet 1 gifts 10 ADA to wallet 3 in a slot
later on, ...
7
votes
0
answers
97
views
Developers are having dismal experience building on Cardano [closed]
When developers get into plutus playground, 10 out pf 10 expect it to work like remix, an IDE. You put a code in. You compile and deploy. And then start interacting with the dApp. All in the same ...
- 343
7
votes
1
answer
133
views
How can you run the Plutus Playground and serve the Haddock documentation from the VSCode DevContainer?
I am still looking to settle on a dev environment for Plutus contracts.
I am thinking about using VSCode with the devcontainer, but would like to know how well it all integrates. Is it easy to have ...
- 480
6
votes
1
answer
420
views
What does @ prefix means?
like this:
auctionInstance = Scripts.validator @Auctioning
and Hello-world app from https://playground.plutus.iohkdev.io/tutorial/tutorials/plutus-playground.html#running-the-hello-world-app
hello = ...
- 433
6
votes
1
answer
161
views
How do you publish on-chain code to mainnet and testnet?
I've understand that the on-chain code is stored in the blockchain through Playground module which is in sync against a local node. But how to "publish" this code to run anywhere? It's an ...
- 247
6
votes
2
answers
176
views
npm build of plutus client fails with "permission denied"
I am trying to run the Plutus playground using the Gitbook recipe (https://docs.plutus-community.com/docs/setup/WindowsWSL.html).
At step 15, the server starts fine, but trying to run the client with &...
- 161
5
votes
1
answer
240
views
Q&A English Auction- if a wallets under bids then provides a valid bid, why doesn't it count the second good bid?
if you set up the english auction with three wallets and do the following:
Wallet 1 min bid 10
Wallet 2 bids 15
wallet 3 bids 9
wallet 3 bids 20
wallet 1 closes
It will got to wallet 2 and wallet ...
- 263
5
votes
1
answer
65
views
Logistics of Developing Contracts
We've done a lot of development on the Plutus Playground; in what ways will the logistics of developing and deploying contracts differ in Gougen?
- 687
5
votes
1
answer
57
views
Choosing Ubuntu over WSL for Plutus development
I use a low end laptop as my daily driver running a WSL Ubuntu-20.04 as my platform of choice. When trying to run the plutus-playground it often crashes. Should I try using Ubuntu or any other Linux ...
- 145
5
votes
1
answer
140
views
Setting up Plutus environment for Apple Silicon computer
I'm trying to setup dependencies to write and test plutus contracts, but I'm worried that the dependencies may not be compatible with the M1 chip.
I have been following these instructions https://www....
5
votes
1
answer
231
views
Writing basic validator scripts
I need someone to explain to me line by line. The code is from plutu tutorials. https://docs.cardano.org/projects/plutus/en/latest/plutus/tutorials/basic-validators.html
All the code in that page I ...
- 433
4
votes
3
answers
127
views
How do users interact with smart contract?
In plutus playground, there is an example called “Vesting”. In the simulation, users can interact with this smart contract by click on “vest fund” or “retrieve funds”.
Now suppose that we compile this ...
- 343
4
votes
1
answer
46
views
Incorrect Pub Key from Wallet Emulator
I am getting incorrect pubkeys by running mockWalletPaymentPubKey $ knownWallet 1 and mockWalletPaymentPubKey $ knownWallet 2 (from here https://youtu.be/ae7U_yKIQ0Y?t=1390).
I checked that
I am in ...
- 125
4
votes
2
answers
185
views
What documentation works with handling utxos at the Plutus Script?
I am trying to make a Plutus smart contract which takes tokens locked to the contract and then on endpoint call (purchase) sends 1 to the caller and then the rest back to the contract. I cant find a ...
- 472
4
votes
1
answer
113
views
How do I test the on-chain validator in Vesting.hs?
In Plutus Pioneer Program, Iteration #3, Lecture #3, Part #4 at 27:48, Lars mentions that he wrote the contract code in a way that invalid transactions will always be caught by the off-chain code. So ...
- 520
4
votes
1
answer
70
views
Week 2 - Homework - valid validator call true/true after invalid call true/false from same wallet doesn't go through
I managed to get the homework transactions to work as expected (happy), so far so good...
I also tried the following scenario which did not work.
Q1: Why doesn't it work?
Q2: How would it be possible ...
- 43
4
votes
2
answers
66
views
When can we expect live deployment of the Plutus Playground
I am working with a low end device, and the live deployment of the playground is what I'm counting on. When can I expect it and is there any community deployed server that is active now?
- 145
4
votes
1
answer
63
views
Is there any keyword to get the epoch details or stake-pool details in Plutus Smart Contract?
I am trying to write a smart contract where I can get the awards for delegators of a particular stake pool. I need to know if that is right now possible to do using Plutus, if yes, pls suggest me.
4
votes
0
answers
146
views
Using Plutus PAB for development instead of Playground
trying to migrate away from the playground and seems like PAB is the way to go. The plutus starter repository orignally seems to be the best place to start but it seems to be outdated (i.e. still ...
- 73
3
votes
2
answers
196
views
npm run start in plutus-playground-client throws several "Could not find module" errors
I'm trying to run the plutus-playground-client. My OS is macOS Big Sur 11.6.2
I have set up the environment with the following steps based on the nix install instructions from:
https://docs.plutus-...
- 121
3
votes
3
answers
243
views
How to turn (compile) “script.hs” into “script.plutus”?
I have a script that is developed in Plutus Playground. It is working well and now I want to deploy it to the Cardano blockchain via cardano-cli.
Following this answer, I have to use cabal to turn my ...
- 343
3
votes
6
answers
195
views
What is the purpose of the `valHash :: Ledger.ValidatorHash` function in the Plutus Pioneer Program's Week 2 homework?
The homework for Week 2 involves implementing validators for two Plutus contracts. Details are here.
Spoiler alert! This probably gives away the answer to Week 2's first homework problem:
-- ...
...
- 131
3
votes
1
answer
129
views
plutus-playground-server: user error (Error evaluating simulation: JsonDecodingError
I'm following the first lecture in the plutus pioneer program but I cannot set up the local environment. The error happens when running npm start on a nix-shell after initializing the playground ...
- 91
2
votes
1
answer
163
views
Use the week 01 Nix-shell for week 02?
I'd like to know if we should use the week 01 nix-shell?
My expectation is that the week 01 nix-shell, was used to start the playground service and the front-end UI.
Although, it's clear that there's ...
- 178
2
votes
1
answer
89
views
What is the benefit of installing plutus playground locally?
In these instructions for working through the plutus pioneer program, it suggests installing the playground locally:
https://tutorials.cardanoacademy.io/plutus-pioneer-program/setting-up-plutus-...
- 301
2
votes
2
answers
223
views
/bin/plutus-playground-server: No such file or directory
Can't get plutus-playground-server to start.
plutus-playground-server: for development use only
/nix/store/601kdlvidgan842yfklrmvpbz6a5xkf7-plutus-playground-server/bin/plutus-playground-server: line ...
- 23
2
votes
1
answer
28
views
Formatted error messages in Playground
Is there any way to get the Playground errors with proper indentations?
This can help read better the issue at hand.
Instead of getting one huge line:
(Tx {txInputs = fromList [TxIn {txInRef = ...
- 343
2
votes
1
answer
72
views
Plutus pioneer program - Lecture #1 - Can't understand behaviour of transactions
Why is the second bid of wallet 2 getting ignored when I test it like this? If the first transaction of wallet 2 was also valid, then the second suceeds. I'm just curious if this is somehow expected ...
- 23
2
votes
1
answer
46
views
plutus playground simulator wait action question
When using the plutus playground simulator:
I'm having trouble finding documentation on the simulator wait actions. What are the differences in functionality between the "wait for" and &...
- 21
2
votes
2
answers
110
views
(Solved) Error building Plutus Application Framework
I am trying to build the Plutus Application Framework. I'm running on Archlinux and both Nix and cabal are installed properly as far as I can tell. I have also set the IOHK Binary Caches.
However when ...
- 198
2
votes
1
answer
50
views
Online Playground does not appear in Safari
Using macOS Catalina 10.15.7 and Safari v 15.2 (15612.3.6.1.8). The Playground URL (https://playground.plutus.iohkdev.io) generates a blank page. It loads fine on Chrome and Brave (haven't actually ...
- 349
2
votes
1
answer
83
views
Failing to set up plutus on windows
So I'm using WSL Windows 10 and I set up IOHK hashes, but everytime I run nix-shell I get following error:
build of '/nix/store/9im4jp068ykqsm4s8996px605p6zrw7q-Agda-plan-to-nix-pkgs.drv' failed. ...
- 31
2
votes
0
answers
27
views
About Fees in the Plutus Playground
I had been reviewing sample codes that can be run in the Plutus Playground, particularly the Vesting.hs code in Cohort #3 Week #3 of PPP. So while trying several cases in the simulation, I sometimes ...
- 106
2
votes
1
answer
305
views
error: suspicious ownership or permission with nix-shell command on plutus-apps repository
Using the nix-shell command in a docker container on GitHub codespaces results in the following error:
$ nix-shell --show-trace
trace: To materialize project.plan-nix for cabal-install entirely, pass ...
- 21
2
votes
1
answer
458
views
Lessons Learned setting up plutus-playground - feedback welcome [closed]
I have finally got the plutus-playground running on 2 separate machines. Each machine is a Mac running Catalina 10.15.7.
After extensive trial and error (some self inflicted) I have identified several ...
- 349
2
votes
1
answer
159
views
"bash: plutus-pab-generate-purs: command not found" issue when run plutus-playground on Ubuntu
I've followed guide for running plutus-playground .
But when I npm run start on plutus-playground-client, it says 'bash: plutus-pab-generate-purs: command not found'.
Please check screenshot on ...
- 21
1
vote
2
answers
1k
views
(Solved) error:\n Variable not in scope: main :: GHC.Types.IO a0 in English Auction
I'm trying to compile the English Auction script on a local plutus-playground-client session and I'm getting this error:
error:\n Variable not in scope: main :: GHC.Types.IO a0
Any help on why ...
- 198
1
vote
2
answers
45
views
build okay locally, but fails in playground
I am trying to compile the Homework01.hs
The build locally on Linux passes when I do :l src/Week02/Homework1.hs
Prelude PlutusTx Ledger.Scripts> :l src/Week02/Homework1.hs
[1 of 1] Compiling Week02....
- 100
1
vote
1
answer
210
views
What is the GC_DONT_GC=1 variable for when running the Plutus Playground locally?
I tried to look for this but I didn't find anything specifically explaining why this fixes errors when launching Plutus Playground locally, although I definitely found instructions on how to go over ...
- 119
1
vote
1
answer
123
views
Interpreter Error (error CallStack (from HasCallStack))
Im getting an interpreter error on the Plutus playground commit 3f84ea4fe3924cb7ee614da2b22c64c02c1177e6. I get it whenever I run the purchase endpoint.
This is the error
Main.hs: This must be ...
- 472
1
vote
1
answer
41
views
Cannot find definitions of tx___ functions in English Auction script
I might be missing some thing but in the English Auction script I am unable to find the definitions of the function that starts with tx:
txOutDatumHash
txInInfoResolved
txOutValue
txInInfoResolved
....
- 198
1
vote
3
answers
290
views
Error running plutus-playground-client in Linux
I have successfully installed nix, cabal and have setup the IOHK binary cache. I cloned the plutus-app repository and successfully built the Haskell packages and other artifacts with nix. Then running ...
- 198
1
vote
1
answer
86
views
segmentation fault when building Plutus-playground.server
I'm following the instructions for installing the Plutus-playground found here
I discovered I must execute the following before step 10
git clone https://github.com/input-output-hk/plutus-apps.git
I ...
- 349
1
vote
1
answer
26
views
Plutus playground not starting with Interpreter error after running :set in GHCI
plutus-playground-server: user error (Error evaluating simulation: InterpreterError (CompilationErrors [CompilationError {filename = "\n/private/tmp/web-ghc-work-1626f2e537d27294/Main.hs", ...
- 174
1
vote
1
answer
97
views
Plutus Playground Server error: opening lock file '/nix/...root.lock': Permission denied
So I've been going through the Plutus Pioneers 3rd cohort lectures and last night accidentally left my computer unplugged. When I booted up Ubuntu Linux on the computer this morning I noticed I have 3 ...
