How to filter advisories from GitHub GraphQL by ecosystem

Links first

• https://docs.github.com/en/graphql/overview/explorer
• https://github.com/advisories
• https://docs.github.com/en/graphql/reference/

I am trying

{
    securityAdvisories(first: 100, ecosystem: nuget) {
    totalCount
    pageInfo {
        endCursor
        startCursor
    }
    nodes {
        description
        summary
        cvss {
        vectorString
        }
        databaseId
        identifiers {
        type
        value
        }
        ghsaId
    }
    }
}

I am getting Field 'securityAdvisories' doesn't accept argument 'ecosystem'" I see the field ecosystem in the https://docs.github.com/en/graphql/reference/objects#securityadvisorypackage

How do I filter by "ecosystem"?

This is possible, because I can do https://github.com/advisories?query=ecosystem%3Anuget How do I get all 113 advisories?

Update

I can filter vulnerabilities belonging to an advisory by ecosystem.

  vulnerabilities(first: 10, ecosystem: NUGET) {
    edges {
      node {
        advisory {
          id
        }
      }
    }

Update 2 I crawl the UI first

page=1;while [ 1 ];do  curl "https://github.com/advisories?page=$count&query=ecosystem%3Anuget" -o $count.txt;count=$((count+1));done
find -maxdepth 1 -name "*.txt" | xargs grep -oE "GHSA-\w{4}-\w{4}-\w{4}" 

After I have the list of GHSA I run this a bit cryptic Python

import requests
import easyargs

template="""
{"query": "query securityAdvisory(ghsaId: \\"GHSA_VALUE\\") {     id     description     ghsaId     permalink     summary     identifiers {       type       value     }     references {       url     }     origin     cwes(first: 10) {       nodes {         name         id         description         cweId       }     }     cvss {       score       vectorString     }     databaseId     publishedAt     notificationsPermalink     updatedAt     severity     withdrawnAt     vulnerabilities(first: 50) {       edges {         node {           severity           updatedAt           vulnerableVersionRange         }       }     }   } } "}
"""

# get token from https://github.com/settings/tokens
# ghsas is a list of GHSAs
@easyargs
def main(token=str, ghsas=str):
    with open(ghsas) as f:
        lines = f.readlines()

    for s in lines:
        s = s.strip()
        data=template.replace("GHSA_VALUE", s, 1)
        r = requests.post(url="https://api.github.com/graphql", data=data, headers={"Authorization":f"bearer {token}"})
        print(r.text)

if __name__ == '__main__':
    main()

I am sure there is a better solution. In the perfect world I would have a single line curl returning a JSON containing 113 Nuget related security avisories. I can't figure out how to query the GraphQL.