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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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 ...
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unable to start plutus-playground-server after full rebuild --> /bin/plutus-playground-server: No such file or directory
After having to completely re-install an OS and setup a development environment. attempting to run the plutus-playground-server after building it wiht nix-build -A plutus-playground.server once in nix-...
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I am getting a strange error when I try to start the playground server localy:
plutus-playground-server: for development use only
error: creating symlink from '/plutus/plutus-playground-server/result.tmp-10234-376872119' to '/nix/store/hf815gz6hs5px2nrnnvsdjcpf8m0dvwg-ghc-shell-...
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3
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70
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Plutus and Haskell live references
I am following the plutus pioneer program as an Haskell newbie.
I am using VSCode to look at the snippets and type my code.
I am wondering what is the best way to integrate (if possible) the languages ...
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1
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69
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Where is Week04.Monad?
Doing Week 04 of cohort 3 Plutus Pioneers here.
In the repl inside the nix shell, inside ~/plutus/plutus-pioneer-program/code/week04
Watching PPP 030402 at 34:54 to about 39:59.
When I do
:l src/...
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15
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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) ...
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97
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How to separate continuing outputs to compare datums
In the auction code of the Plutus pioneer program during week 1, the code approves a bid by comparing the datum with previous ones in the Plutus on-chain code. How could you repurpose this so that you ...
CommunityBot
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114
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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 ...
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1
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77
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Error when minting with CLI
I tried to follow Lars' instructions on minting with CLI and I get the error below. I did not modify cabal.project. Any idea what goes wrong?
./mint-token-cli.sh ...
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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 ...
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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....
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1
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115
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How to get the return type of a contract
I was reviewing the code from https://github.com/input-output-hk/plutus-pioneer-program/blob/main/code/week05/src/Week05/NFT.hs and I don't understand why this section does not cause a compile error.
...
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2
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63
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Error on "cabal build" - Week01 - warning is in EnglishAuction.hs
My cabal build ended in a warning - yet not sure if this needs to be resolved or if build completed ?
Seems like build aborted over a warning ?
Below is the warning that seems to have aborted the ...
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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 ...
CommunityBot
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1
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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 ...
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1
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198
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What is the correct way to compare two instances of Value data type?
Question
What is the correct way to compare two instances of Value data type?
Context
I would like to check if outgoing transaction identified by PubKeyHash has the same Value as Value which was ...
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1
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75
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cardano-cli not showing utxo but Testnet Blockchain Explorer does
I have requested funds via Faucet, twice in fact because the first one I thought the request didn't go through but when I run:
cardano-cli query utxo --address $(cat 01.addr) --testnet-magic ...
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1
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44
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ConnectionError: There was a problem with the response body: Unexpected token T in JSON at position 0
I am having an issue with compiling any contracts on the local playground. It doesn't matter even when trying to compile the example contracts that are provided I keep getting this error. I have no ...
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1
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280
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nix doctor --verbose [FAIL] Multiple versions of nix found in PATH, on MacOS i7
After performing a git commit tag update on plutus-apps, I restarted my computer, and ran nix doctor --verbose and got the following FAIL
[FAIL] Multiple versions of nix found in PATH:
/nix/...
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1
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210
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cabal fails to build plutus-core
When installing plutus starter on a Mac M1 running macOS 12.1 Monterey, the command cabal build logs the following error, even after updating cabal:
Failed to build plutus-core-0.1.0.0.
Build log (
/...
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1
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121
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Building PAB error: attribute 'plutus-pab' in selection path 'plutus-pab' not found
I am following https://docs.plutus-community.com/docs/setup/MacOS.html
I know the plutus-apps repo is newer than those docs and have downloaded it but it seems I can't build plutus-pab.
When I run
$ ...
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1
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132
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nix-shell : getting error "Index state found was 2021-10-20T00:00:00Z and no `index-sha256` was provided."
I'm having issues starting nix-shell from the plutus-apps directory.
I have followed the steps provided here: https://docs.plutus-community.com/docs/setup/WindowsCohort2.html.
Below is the full output ...
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1
answer
303
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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 ...
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1
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1
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59
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Plutus Cohort 3: slot count why 11 and not 14
I ran the auction exactly as shown. The slot count at the closing (after the additional wait) comes up to 14, not 11, as shown in the video. (if I add all the waits, the result is, indeed, 14). If the ...
CommunityBot
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4
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1
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49
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English Auction rejected translations are not shown
I have made a sample scenario:
Start auction with a deadline of +10 slots
wait for 12 slots
Bid
Wait for 1 slot to allow TX to be processed
The third transaction is not shown - which is ...
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1
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181
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nix-build not found inside nix-shell (Linux)
Every time I enter nix-shell, I need to execute the following command, otherwise nix-build and other nix-* commands are not found.
source /home/xxx/.nix-profile/etc/profile.d/nix.sh
I have added the ...
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1
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96
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nix-build -A plutus-playground.client Error
I am part of cohort 3 and setting up on Mac OS also (Big Sur); I am following the notes here:https://docs.plutus-community.com/docs/setup/MacOS.html
Was able to complete Step 9 (build library). But on ...
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1
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198
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Playground client can't connect to playground server (all localhost)
I am on an Intel based iMac Pro running Big Sur (11.6.1)
I have followed every variant of the local playground setup I can find (all are some version of page 2 in this document https://docs.google.com/...
CommunityBot
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2
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209
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nix-shell command causes error "invalid character in Base64 string"
I'm following the Plutus Env: Setup Starter Pack guideline to run a Plutus Playground Local Instance. At step 4, when running the command nix-shell, I got the error message error: invalid character in ...
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1
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162
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nix-build fails to build plutus or plutus-playground server/client with error: reading from file: Is a directory
I'm attempting to finish the setup for plutus pioneers cohort3 on wsl2 (Windows 10) with Ubunutu 20.04
Nix version: 2.5.1
I cloned the plutus-apps repo (and previously tried the plutus repo before ...
CommunityBot
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1
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Playground returning: ERR_CONNECTION_REFUSED after power-cycle of host
I was able to run the playground on localhost yesterday. Then I turned off the computer.
Today, I restarted nix-shell and started the client/server, but now the browser is not loading and giving error:...
CommunityBot
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2
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110
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git checkout 41149926c108c71831cfe8d244c83b0ee4bf5c8a for English Auction doesn't work
According to cabal.project script for the English Auction, the git branch for this plutus script is:
source-repository-package
type: git
location: https://github.com/input-output-hk/plutus-...
CommunityBot
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1
answer
94
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Webpack warning when starting plutus-playground-client
I am getting a warning when I run npm start on the plutus-playground-client:
ℹ ｢wds｣: webpack output is served from /
ℹ ｢wds｣: Content not from webpack is served from /home/datapool/plutus-apps/plutus-...
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1
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48
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can i use the live playground platform, instead of local installation?
I wen through the environment setup detail and got a problem.
The thing is my laptop is running out of resources. so i decided to utilize the online playground
environment for the tutorial. I just ...
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1
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1
answer
67
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Smart contract configuration
Is it possible to write smart contract validator that would check:
if UTXO that contains service price information was included so only script can read what is actual price of the service.
UTXO with ...
CommunityBot
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1
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83
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WSL2 Plutus env setup - docker load error: attribute 'devcontainer' in selection path
docker load < $(nix-build default.nix -A devcontainer)
error: attribute 'devcontainer' in selection path 'devcontainer' not found
-bash: $(nix-build default.nix -A devcontainer): ambiguous
redirect
...
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1
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120
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VSCode + Docker setup problems on Windows
I'm trying to setup the local enviroment by the VSCode + Docker way, because i find it easier for a newbie like me.
I open the cloned repository on VSCode but when y click on the button to reopen it ...
CommunityBot
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1
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159
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"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 ...
CommunityBot
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2
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1
answer
137
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VSCode/Docker Setup Starter Pack problems
I'm trying to implement the 4th option of the starter pack setup using docker/vscode on my mac M1. I followed the instructions carefully from the github repository, but I'm getting errors. I'm new ...
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3
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128
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How to start plutus pioneers course on canvas
Today is the course start date for pioneers program.
But when i login to canvas, i am not getting any content.
I checked the announcement board and it just shows me up course syllabus and the teacher'...
CommunityBot
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2
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70
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StateMachines on Testnet : How to step a client?
I want to run a statemachine on testnet.
The SM runs in the emulator, and I can initialize on testnet,
but if I try to make a new client it throws an error.
The error comes from transition failure, ...
CommunityBot
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2
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150
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Error compiling Week01
I'm on commit: 41149926c108c71831cfe8d244c83b0ee4bf5c8a of the plutus-apps repo (I've also tried 7f53f18dfc788bf6aa929f47d840efa1247e11fd, doesn't seem to make a difference).
When running cabal build ...
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1
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230
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Plutus transaction error PT5
I am building a transaction where I use the following function to make my datum and redeemer,
writeJSON :: PlutusTx.ToData a => FilePath -> a -> IO ()
writeJSON file = LBS.writeFile file . ...
CommunityBot
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1
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59
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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 ...
CommunityBot
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4
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572
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WSL2 install - plutus fails to build, unable to open db file in 'nix/var/nix/db/db.sqlite'
I'm attempting to finish the setup for plutus pioneers cohort3 on wsl2 (Windows 10) with Ubunutu 20.04. When I run the command:
nix --extra-experimental-features nix-command build -f default.nix ...
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2
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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-...
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1
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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 ...
CommunityBot
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2
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140
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How to resolve npm build failure after running `GC_DONT_GC=1 npm start`?
MacOs Catalina 10.15.7 (Intel)
After facing issue here, I ran the command GC_DONT_GC=1 npm run start and it build some libraries, however failed with following error (plutus-playground-server was up ...
CommunityBot
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2
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82
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Diagnosing a POSIXTime discrepancy
My computer's date command is returning a timestamp wildly different from what testnet wants.
Using this formula,
> slotToEndPOSIXTime testnetConf 55047601
POSIXTime {getPOSIXTime = 1651015217999}
...
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1
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239
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Not in scope: type constructor or class ‘PaymentPubKeyHash’ - Week 1 Pioneers Exercise
I'm trying to compile the week 1 code on plutus playground hosted locally, but I'm getting this error:
error:
Not in scope: type constructor or class ‘PaymentPubKeyHash’
|
57 | { aSeller ...
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