Composite Unique breaking Name Assertion

[willwillis]

This model is the result of prisma introspection

model JobRun {
  createdAt DateTime  @default(now())
  endTime   DateTime?
  exitCode  Int?
  id        Int       @default(autoincrement()) @id
  jobId     Int
  jobRunId  Int?
  moreInfo  String?
  startTime DateTime
  status    JobStatus @default(ACTIVATED)
  updatedAt DateTime
  Job       Job       @relation(fields: [jobId], references: [id])

  @@unique([jobId, startTime], name: "JobRun.jobId_startTime")
}

yarn generate fails with this error:

$ ts-node --transpile-only -P nexus.tsconfig.json src/Api/nexusSchema

/home/will/code/pal/paljs-fullstack-demo/node_modules/graphql/utilities/assertValidName.js:42
    return new _GraphQLError.GraphQLError("Names must match /^[_a-zA-Z][_a-zA-Z0-9]*$/ but \"".concat(name, "\" does not."), node);
           ^
GraphQLError: Names must match /^[_a-zA-Z][_a-zA-Z0-9]*$/ but "JobRun.jobId_startTimeCompoundUniqueInput" does not.
    at isValidNameError (/home/will/code/pal/paljs-fullstack-demo/node_modules/graphql/utilities/assertValidName.js:42:12)
    at Object.assertValidName (/home/will/code/pal/paljs-fullstack-demo/node_modules/graphql/utilities/assertValidName.js:21:15)
    at new NexusInputObjectTypeDef (/home/will/code/pal/paljs-fullstack-demo/node_modules/@nexus/schema/src/definitions/inputObjectType.ts:30:5)
    at Object.inputObjectType (/home/will/code/pal/paljs-fullstack-demo/node_modules/@nexus/schema/src/definitions/inputObjectType.ts:47:10)
    at forEach (/home/will/code/pal/paljs-fullstack-demo/node_modules/@paljs/nexus/src/index.ts:67:13)
    at Array.forEach (<anonymous>)
    at Object.onInstall (/home/will/code/pal/paljs-fullstack-demo/node_modules/@paljs/nexus/src/index.ts:64:23)
    at /home/will/code/pal/paljs-fullstack-demo/node_modules/@nexus/schema/src/builder.ts:657:44
    at Array.forEach (<anonymous>)
    at SchemaBuilder.beforeWalkTypes (/home/will/code/pal/paljs-fullstack-demo/node_modules/@nexus/schema/src/builder.ts:651:18)
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

Any ideas how to get around this issue?

Environment details:

@prisma/cli          : 2.9.0
@prisma/client       : 2.9.0
Current platform     : debian-openssl-1.1.x
Query Engine         : query-engine 369b3694b7edb869fad14827a33ad3f3f49bbc20 (at node_modules/@prisma/cli/query-engine-debian-openssl-1.1.x)
Migration Engine     : migration-engine-cli 369b3694b7edb869fad14827a33ad3f3f49bbc20 (at node_modules/@prisma/cli/migration-engine-debian-openssl-1.1.x)
Introspection Engine : introspection-core 369b3694b7edb869fad14827a33ad3f3f49bbc20 (at node_modules/@prisma/cli/introspection-engine-debian-openssl-1.1.x)
Format Binary        : prisma-fmt 369b3694b7edb869fad14827a33ad3f3f49bbc20 (at node_modules/@prisma/cli/prisma-fmt-debian-openssl-1.1.x)
Studio               : 0.296.0
``

@paljs/cli/2.5.2 linux-x64 node-v14.12.0

Thank you.