compiler remappings fails if same name path

Environment information

• brownie Version: 1.12.1
• ganache-cli Version: x.x.x
• solc Version: x.x.x
• Python Version: 2.7.17 or 3.6.9
• OS: Ubuntu 18.04.5 LTS

What was wrong?

1. forked ESD
2. init new brownie dir
3. moved contracts
4. ESD uses truffle npm style imports so need to perform remappings
5. install packages: brownie pm install OpenZeppelin/openzeppelin-contracts@2.5.1 brownie pm install uniswap/uniswap-v2-core@1.0.1 brownie pm install uniswap/uniswap-lib@2.1.0
6. set remappings:

        remappings: 
            - "@openzeppelin=OpenZeppelin/openzeppelin-contracts@2.5.1"
            - "@uniswap/lib=uniswap/uniswap-lib@1.1.2"
            - "@uniswap/v2-core=uniswap/uniswap-v2-core@1.0.1"

1. error on compile

contracts/oracle/Oracle.sol:21:1: ParserError: Source "@uniswap/v2-core/contracts/interfaces/IUniswapV2Pair.sol" not found: File outside of allowed directories.
import '@uniswap/v2-core/contracts/interfaces/IUniswapV2Pair.sol';

If I flip the two uniswap remappings, the 2nd one always fails. eg)

        remappings: 
            - "@openzeppelin=OpenZeppelin/openzeppelin-contracts@2.5.1"
            - "@uniswap/v2-core=uniswap/uniswap-v2-core@1.0.1"
            - "@uniswap/lib=uniswap/uniswap-lib@1.1.2"

will produce errors

contracts/mock/MockUniswapV2PairTrade.sol:20:1: ParserError: Source "uniswap/uniswap-lib@1.1.2/contracts/libraries/FixedPoint.sol" not found: File not found.

How can it be fixed?

regex? it appears the remapping ignores the info after the / so uniswap/lib and uniswap/v2-core are just treated identically. the 2nd entry will always fail.

[utgarda]

Totally reproducing:

compiler:
  solc:
    version: 0.8.3
    remappings:
      - "@openzeppelin-upgradeable=/home/username/.brownie/packages/OpenZeppelin/openzeppelin-contracts-upgradeable@4.1.0"
      - "@openzeppelin=OpenZeppelin/openzeppelin-contracts@4.1.0"

the above works, but if you remap as just

compiler:
  solc:
    version: 0.8.3
    remappings:
      - "@openzeppelin-upgradeable=OpenZeppelin/openzeppelin-contracts-upgradeable@4.1.0"
      - "@openzeppelin=OpenZeppelin/openzeppelin-contracts@4.1.0"

i.e. if 2 remappings have the same path prefix, it’s compiler errors “File not found” all over the place, like

ParserError: Source "OpenZeppelin/openzeppelin-contracts@4.1.0/contracts/access/Ownable.sol" not found: File not found.

[iamdefinitelyahuman]

Thanks for the workaround, I’ll have a look here shortly.

For reference: https://docs.soliditylang.org/en/latest/using-the-compiler.html#path-remapping