Questions tagged [plutus-pioneer-program]
A program to recruit and train developers in Plutus for the Cardano ecosystem. Use this tag for questions regarding the Plutus pioneer program. Keep lecture and homework questions brief and on-topic. Give full answers that clearly explain why they resolve the problem.
375
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How to analyze the Plutus budget usage?
When I run my minting policy script I get the error
Command failed: transaction build Error: The following scripts have execution failures:
the script for policyId 0 (in the order of the PolicyIds) ...
- 35
0
votes
1
answer
29
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Cabal - could not resolve dependencies error
I have completed the pioneer program and am writing my own app. I've created my react front end and now am trying to serialize my smart contract in Haskell for a minting policy I wrote. The problem ...
- 121
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45
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Programmatically write and submit a smart contract
Title. Any ways to accomplish this? Preferrably in react/javascript
Edit: downvote me to oblivion!!
- 321
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53
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Lucid Vesting demo, signing from two different accounts but same seed
I'm working through the beneficiary vesting example where we have two beneficiaries: beneficiary 2 (giver who can reclaim funds after deadline), and beneficiary 1 (must claim gift before deadline).
In ...
- 47
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28
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PubKeyHash datatype vs BuiltinByteString for serialising scripts
In one of the utility function for serialising validator functions, we have
validator :: PubKeyHash -> Validator
and
saveVal :: PubKeyHash -> IO ()
I was able to compute the PubKeyHash for my ...
- 47
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1
answer
49
views
Lucid vesting demo
I'm running into the follow Lucid error from Week4 of Plutus pioneer program:
/workspace/code/Week04/lecture# deno run -A lucid-vesting.ts
error: Uncaught (in promise) TypeError: Cannot convert ...
- 47
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1
answer
19
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How to load test Nami with Vesting example?
I'm working through week3 of PPP#4:
https://www.youtube.com/watch?v=C8TuGSzhqXU&list=PLNEK_Ejlx3x2zXSjHRKLSc5Jn9vJFA3_O&index=5]
Here, the Vesting example using Lucid is demo and while I'm ...
- 47
2
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2
answers
73
views
Javascript SDK for working with Plutus smart contracts
Are there any javascript SDKs which enable you to do the following:
programmatically create and submit a Plutus smart contract to mainnet
check what assets are currently locked at a given script ...
- 321
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votes
2
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70
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playground-common package giving 'Failed to build scrypt-0.5.0' error
I'm trying to run my own little smart contract in the plutus-pioneer-program [fourth iteration] docker container and I'm having some problems. I've just added an extra folder alongside the other weeks....
- 25
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1
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142
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Lucid Cardano Datum Error
I'm trying to build lucid to connect with cardano smartcontract from scratch using webpack, but I always getting this error related to datum data
Uncaught (in promise) TypeError: Cannot read ...
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1
answer
59
views
Typed redeemer in a minting policy
I could not make the typed redeemer in the following minting policy work. The redeemer was supposed to be data MintAction = Mint | Burn. (I settled with the workaround type MintAction = Bool, with ...
- 63
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47
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Lucid npm throws error
I am trying to run the Lucid app. In /code/Week03/lucid directory, when I run npm install I get these errors:
npm ERR! code 126
npm ERR! path /workspace/code/Week03/lucid/node_modules/utf-8-validate
...
- 198
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answers
21
views
Does someone know how to integrate the plutus docs snippets on Sublime text?
I want to integrate the plutus docs provided in the ppp, which is initialized this way:
python3 -m http.server -d ../plutus-pioneer-program/docs/plutus-docs/haddock
I already installed the LSP(...
- 53
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1
answer
223
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Understanding a datum declaration in typescript
At the bottom of this post are lines 52-68 of file lucid-vesting of week 4 (PPP fourth iteration). I am having a hard time understanding line 60:
const dtm: Datum = Data.to<VestingDatum>(datum,...
- 63
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1
answer
111
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Can't collect utxo from the gift script address
I'm following Plutus Pioneers Program, 4th Cohort.
In the 2nd week we learned the smart contract Gift.hs
-- This validator always succeeds
mkGiftValidator :: BuiltinData -> BuiltinData -> ...
- 35
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1
answer
34
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Week02 Homework 1
I am getting type mismatch when I use traceIfFalse. What could be be reason? And how could I get this resolved. I also noticed that it didn't fail while I build lecture examples.
Couldn't match ...
- 113
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83
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The Plutus script evaluation failed [Homework Week 02]
I'm a have problem unlocking the smart contracts of the homework of week 02.
The Plutus code:
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE ImportQualifiedPost #-}
{-# LANGUAGE NoImplicitPrelude ...
- 53
2
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1
answer
60
views
Can't collect due to a non existent script
I'm following Plutus Pioneers Program, 4th Cohort, I'm at Week 2 on testnet
I'm struggling a bit collecting the gift, I have do a slightly modified version of Gift, creating it works as expect:
$ ...
- 123
1
vote
1
answer
46
views
Is Plutus off-chain code relevant for testing?
It was mentioned in lecture 1 that in this fourth cohort of the PPP we won't need to learn to write off-chain code in Plutus/Haskell. Nevertheless it appears that testing uses the emulator and it ...
- 63
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12
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nix-shell fails when first run
I am new to cardano development and I was following the instruction manual that was linked in plutus pioneer program lecture This link and everything went well until I ran nix-shell there is where I ...
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1
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168
views
How to deploy the Plutus smart contract
I am following Plutus-pioneer-program to learn smart contract development in Cardano. I have tried the onchain and offchain code, compiled and tested in Plutus playground and also in emulator trace. ...
- 29
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1
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25
views
Custom currency error: Cannot build the initial state: Tag "toCardanoPolicyId"
I try to set an initial state of the emulator like so:
test :: IO ()
test = runEmulatorTraceIO' def emCfg myTrace
where
dist = Map.fromList [ (senderWallet, Ada.lovelaceValueOf 100_000_000)
...
- 343
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1
answer
44
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SlotToPOSIXTime in English Auction Demo
in my cabal repl, i'm getting the following error from trying to replicate the week1 demo of Plutus-pioneer-program. I'm also unable to simulate the example scenario in the playground (i can see ...
- 47
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49
views
PaymentPubKeyHashes don't match
I have a structured datum like:
data VestingDatum = VestingDatum
{ beneficiary :: PaymentPubKeyHash
, deadline :: POSIXTime
} ...
- 343
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votes
1
answer
62
views
Module `Ledger.Typed.Scripts' does not export `wrapValidator'
I try to compile code from Plutus Pioneer Program week 4. These lines cause error.
typedValidator :: Scripts.TypedValidator Vesting
typedValidator = Scripts.mkTypedValidator @Vesting
$$(PlutusTx....
- 343
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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
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vote
1
answer
114
views
User error: Caused by: [ (builtin unConstrData) (con data #187b) ] while trying to unlock tokens from contract
hi I am getting this error while trying to unlock tokens from my treasury contract it is already topp up with tokens when trying to unlock with the access token doesn't know the exact reason behind ...
- 11
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2
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50
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How to check the output datum reference in V2
The following code would work for V1:
outputDatum :: EkivalEscrowDatum
outputDatum = case transferDatum $ txOutDatumHash ownOutput >>= flip findDatum info of
Nothing -> traceError "...
4
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3
answers
127
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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
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1
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43
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Printing a plutus validators cborhex to a file
I was hoping to get some advice re printing a plutus validators cborhex to a file. Im kinda basing my logic off of an example in week03 in the pioneer program but need to make some adaptations.
Below ...
- 25
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1
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46
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Use a parameterized currencySymbol within a Plutus Validator. Unsupported feature: Type constructor: GHC.Prim.ByteArray#
I have a minting policy which is parameterized by PaymentPubKeyHash and a script which checks that a token from that minting policy has been burned. The script also takes PaymentPubKeyHash as a ...
- 13
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2
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80
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Error cabal build: "Failed to build lzma-0.0.0.3" even in nix-shell and also tried "sudo-apt install liblzma-dev"
I'm trying to run the command "cabal build" the Week02 code of plutus-pioneer-program but it has this error and I have tried everything but the same error keeps appear:
Failed to build lzma-...
- 21
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votes
3
answers
239
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
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120
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Any up to date Plutus tutorials for how to use the Emulator Trace?
I've recently updated my plutus-starter based app to the latest version, and it now references plutus-apps v0.1.0, and there are a lot of changes compared to what I started with in January.
It seems ...
- 239
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1
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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 ...
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0
answers
64
views
TxOutRefNotFound when using Plutus.Contract.Wallet (getUnspentOutput)
I am trying to get a UTxO of the current wallet, use it to mint a token via the OneShotCurrency type, but I keep getting the following Error:
(TxOutRefNotFound (TxOutRef {txOutRefId = ...
- 1,162
2
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0
answers
29
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npm run start in plutus-playground-client creating npm errors
edit...I was able to get the plutus-playground-client working by using --force. How do I fix the monaco-editor dependency errors so I don't need to force it? Or do I even need to worry about it?
I am ...
- 121
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1
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24
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Is there training offered for those interested in being moderators?
Is there training offered for being a moderator? I would love to be one of them. I like learning and helping too.
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vote
2
answers
75
views
Plutus week 6 - Oracle example smart contract removed
Previously in Plutus pioneer program Week 6 shows how to implement an Oracle, now the example code has been removed.
Is this because the way to implement Oracles has changed? and the previous approach ...
- 13
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1
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162
views
Cabal repl fails because of missing dependency lzma
Summary
When running cabal repl inside any week in the Plutus Pioneer Program, it fails with the error message:
cabal: Missing dependency on a foreign library:
* Missing (or bad) header file: lzma.h
* ...
- 31
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2
answers
138
views
Plutus V2 Primitives
Does any have (or has anyone found) a simple summary of Plutus V2 Primitives? They made the short list of big changes in the Vasil fork announcement, so they seem important. Other than just reading ...
- 13
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1
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108
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How to reduce tx size using typed Plutus script with Vasil fork PlutusV2?
With the recent Vasil fork script references allow to reduce transaction size. Even though Vasil has been already launched on the testnet I could not find information on how to reduce the size of ...
- 599
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69
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Cannot wrap my head on NFTs
I am running through the Plutus Pioneer Program and I have reached week 5. Also as a reference, I will use the LobsterChallenge repository. I am a bit confused about how NFTs work for the Cardano ...
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1
answer
59
views
Is there a way to see which Plutus code is deployed on a specific script address?
On Ethereum, for example, there is a way to see the Solidity code that is deployed in a specific address (as long as the code gets verified).
Is there a way to achieve this same behaviour in Cardano?
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1
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67
views
How does valuePaidTo work?
How does valuePaidTo work ? Does it give the value paid by the script to the pubkeyhash or is it the total value of the pubkeyhash for the pending transactions ?
Consider the following TxOut
txOutputs ...
- 13
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1
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36
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Did I update Plutus Apps Repo Wrong?
I just did a git pull updating my plutus repos from the one used in plutus pioneers 3 to the full state. I did not choose to move the HEAD to the commit mentioned and wanted to see what happens if I ...
- 972
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86
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Using `curSymbol` function in Validator script
supposed I have a mintingpolicy script (simple one time minting policy, parameterizing TxOutRef) and a validator script. I want to validate if the token with correct CurrencySymbol is spent in a ...
0
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1
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112
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Can't create ```TokenName``` using ```tokenName``` with error ```GHC Core to PLC plugin: E042:Error: Unsupported feature: ...```
I'm not sure is relevant but the code in question is for a generic Validator (with Datums and Redeemers) used to get a forwarded minting policy
the problem should be clear from the title, I can't get ...
- 992
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2
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178
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problem setting up the plutus environment
Noob here. I am basically just trying to learn plutus on my own I am on week01. When I ran the following command:
[nix-shell:~/plutus-apps/plutus-playground-client]$ npm run start (or even just npm ...
- 1
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1
answer
56
views
Where does the PAB run?
I understand that PAB is a backend that:
provides a standardized environment in which Plutus applications run
provides disciplined state management
presents discoverable interfaces to the external ...
- 1,055