yesodweb/persistent

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Persistence interface for Haskell allowing multiple storage methods.

Stars: 486
Forks: 306
Open beginner issues: 0
Indexed issues: 260

Dominant language: Haskell
License: MIT
Last GitHub push: Jun 29, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue
PR merge metrics: No merged PRs in 30d

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260 open issues indexed

error building persistent-sqlite-2.13.3.1 with ghc-10.0.0.20260917: __STDC_VERSION__ does not advertise C11, C++11 or later Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

yesodweb/persistent#1641 · Opened Sep 19, 2026
Regression since bumping resource-pool from `0.4.0.0` to `0.5.x` Open

Difficulty 3/5 1-2 days Newbie friendliness 58/100

yesodweb/persistent#1636 · Opened Aug 26, 2026
use aeson >= 2.3.0.0 to avoid HSEC-2026-0007 Open

Difficulty 2/5 1-3 hours Newbie friendliness 70/100

yesodweb/persistent#1635 · 1 comment · 1 reaction · Opened Aug 18, 2026
Typos in Documentation for Database.Persist.Quasi Open

Difficulty 1/5 Under an hour Newbie friendliness 82/100

yesodweb/persistent#1634 · Opened Aug 8, 2026
Hackage build failed for 'persistent-postgresql' since 2.13.7.0 Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

yesodweb/persistent#1632 · Opened Jul 9, 2026
persistent-redis-2.13.0.2 fails to build with hedis-0.16.1 Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

yesodweb/persistent#1631 · Opened Jun 27, 2026
persistent-sqlite 2.13.3.1 can serialize UTCTime values that are not lexicographically ordered Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

yesodweb/persistent#1628 · Opened Jun 15, 2026
Clarify the order stability of insertMany Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

yesodweb/persistent#1625 · Opened Apr 17, 2026
runOnException does not run on asynchronous exceptions Open

Difficulty 4/5 3-5 days Newbie friendliness 50/100

yesodweb/persistent#1624 · Opened Apr 14, 2026
Unnecessary dependencies for a custom primary key Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

yesodweb/persistent#1622 · 1 comment · Opened Feb 27, 2026
"default" expressions in persistentmodels files no longer parse as before Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

yesodweb/persistent#1620 · Opened Feb 20, 2026
Bump template-haskell dependency upper bounds for ghc-9.14 Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

yesodweb/persistent#1619 · 1 comment · 1 reaction · Opened Feb 20, 2026
RFC: direct row codecs Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

yesodweb/persistent#1617 · 1 comment · 4 reactions · Opened Feb 18, 2026
ID fields can sometimes be generated with ForeignRefs Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

yesodweb/persistent#1615 · Opened Dec 12, 2025
Missing functions getKeyBy and upsertBy_ Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

yesodweb/persistent#1613 · Opened Dec 11, 2025
Improve `NULL` handling in Unique keys Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

yesodweb/persistent#1607 · 1 comment · 1 reaction · Opened Aug 27, 2025
persistent-mongoDB: allow resource-pool-0.5? Open

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

yesodweb/persistent#1606 · Opened Jul 15, 2025
Notes on caching queries in persistent Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

yesodweb/persistent#1605 · Opened Jul 10, 2025
Unused Haskell files in `persistent-sqlite` Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

yesodweb/persistent#1602 · Opened Jul 7, 2025
New parser has differing behavior on quoted attributes Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

yesodweb/persistent#1599 · 2 comments · Opened Jun 25, 2025
Sqlite Ids are not AUTOINCREMENT Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

yesodweb/persistent#1598 · Opened Jun 14, 2025
SQLite queries are uninterruptible Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

yesodweb/persistent#1597 · 1 comment · Opened Jun 6, 2025
Docs on Fixing Postgres Default Value Mismatches Is Incorrect Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

yesodweb/persistent#1596 · Opened May 23, 2025
persistent testsuite failed for i686 Open

Difficulty 4/5 3-5 days Newbie friendliness 32/100

yesodweb/persistent#1583 · 2 comments · Opened Apr 12, 2025
deleteBy is broken in some cases Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

yesodweb/persistent#1581 · 2 comments · Opened Apr 7, 2025
discoverEntities discovers entities for the wrong backend Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

yesodweb/persistent#1578 · Opened Mar 26, 2025
Allow customization of the Haskell name Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

yesodweb/persistent#1568 · Opened Feb 11, 2025
Sqlite CHECKs Open

Difficulty 4/5 3-5 days Newbie friendliness 32/100

yesodweb/persistent#1562 · 1 reaction · Opened Jan 5, 2025
Natural/Composite key and IN (<-.) operator returning wrong results Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

yesodweb/persistent#1558 · Opened Nov 1, 2024
2.14.6.3: No instance for ‘NFData Text’ arising from a use of ‘rnf’ Open

Difficulty 3/5 1-2 days Newbie friendliness 30/100

yesodweb/persistent#1557 · Opened Oct 11, 2024
Word64 does not roundtrip through a database correctly Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

yesodweb/persistent#1552 · 2 comments · Opened Sep 17, 2024
Incorrect casing for “ID” Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

yesodweb/persistent#1549 · 5 comments · Opened Sep 4, 2024
Marshal error on list of pairs Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

yesodweb/persistent#1548 · 3 reactions · Opened Sep 3, 2024
Strict types for sqlite Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

yesodweb/persistent#1542 · 12 comments · 1 reaction · Opened Jul 18, 2024
Support Prepared Statments for Postgres Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

yesodweb/persistent#1539 · 1 reaction · Opened Jul 9, 2024
`persistent-2.14.6.1`: relax upper bound of dependency on `template-haskell` Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

yesodweb/persistent#1538 · Opened Jun 20, 2024
Migration with is not idempotent when combining default=null and Maybe type Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

yesodweb/persistent#1535 · 1 comment · Opened May 22, 2024
Migration with lowercase 'current_timestamp' is not idempotent Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

yesodweb/persistent#1532 · 2 comments · Opened May 22, 2024
`selectSourceRes` is not thread-safe with sqlite? Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

yesodweb/persistent#1529 · 1 comment · Opened Mar 26, 2024
`PersistField Int` should parse `PersistRational` Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

yesodweb/persistent#1527 · 1 comment · Opened Feb 6, 2024
Don't build docs in CI Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

yesodweb/persistent#1520 · Opened Oct 3, 2023
Postgres migrations should not trigger if the unique key is too long Open

bug good first issue Postgres

Difficulty 3/5 1-2 days Newbie friendliness 45/100

yesodweb/persistent#1515 · 2 comments · Opened Aug 29, 2023
Support aeson >= 2.2.0.0 and GHC 9.8 Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

yesodweb/persistent#1512 · Opened Aug 13, 2023
Migrations should be able to report *why* it is migrating Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

yesodweb/persistent#1510 · Opened Aug 1, 2023
persistent-qq-2.12.0.5 testsuite fails to compile with ghc-9.6 Open

Difficulty 1/5 Under an hour Newbie friendliness 45/100

yesodweb/persistent#1506 · 1 comment · Opened Jul 6, 2023
GHC 8.4 Support Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

yesodweb/persistent#1504 · Opened Jun 28, 2023
TimeOfDay no longer roundtrips through sqlite Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

yesodweb/persistent#1500 · 4 comments · Opened Jun 3, 2023
`upsertWhere` unnecessarily restricted to `SqlBackend` Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

yesodweb/persistent#1498 · 1 comment · Opened May 19, 2023
`upsertWhere` in `Database.Persist.Postgresql` has too strict a type signature Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

yesodweb/persistent#1489 · 1 comment · Opened Apr 21, 2023
Codegen bug: doesn't use qualified type in `sqlType` invocation Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

yesodweb/persistent#1475 · 4 comments · Opened Feb 28, 2023

yesodweb/persistent

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