lightbend/config

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configuration library for JVM languages using HOCON files

Stars: 6.3k
Forks: 980
Open beginner issues: 0
Indexed issues: 237

Dominant language: Java
License: No license data
Last GitHub push: Jul 1, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed
PR merge metrics: No merged PRs in 30d

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237 open issues indexed

Do you really think ConfigFactory.load not throwing anything when it fails to load a resource is okay? Open

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

lightbend/config#858 · 2 comments · Opened Sep 8, 2026
Reads are ~10x slower when a path element contains a digit Open

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

lightbend/config#857 · Opened Aug 15, 2026
Variable substitution fails unexpectedly with overloaded values using resolveWith() Open

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

lightbend/config#855 · 2 comments · Opened Jun 18, 2026
Proposal: Support inline fallback syntax for substitutions (e.g. `${VAR:default}`) Open

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

lightbend/config#827 · Opened Oct 3, 2025
ConfigObject is not immutable - can mutate through keySet() Open

Difficulty 2/5 1-3 hours Newbie friendliness 52/100

lightbend/config#819 · Opened Jun 9, 2025
Missing separator between list elements leads to unintended merge Open

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

lightbend/config#814 · 1 comment · Opened Apr 15, 2025
Large number of appends for a single key is very slow to resolve Open

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

lightbend/config#813 · 1 comment · 2 reactions · Opened Jan 23, 2025
Inheritance breaks configuration file overlays Open

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

lightbend/config#812 · Opened Dec 10, 2024
When rendering unresolved ConfigConcatenation, whitespaces are erroneously included Open

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

lightbend/config#806 · 2 comments · Opened Jun 26, 2024
Add a module info Open

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

lightbend/config#803 · 10 comments · 3 reactions · Opened Feb 25, 2024
Regression in environment variable reading behavior Open

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

lightbend/config#802 · 2 comments · 3 reactions · Opened Jan 16, 2024
Inconsistent behavior with Overflow/Underflow and Exceptions Open

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

lightbend/config#801 · Opened Nov 30, 2023
Rendering partially resolved appended array results in invalid configuration Open

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

lightbend/config#800 · 2 comments · Opened Nov 28, 2023
Cannot provide environment variables programmatically Open

Difficulty 5/5 Over a week Newbie friendliness 32/100

lightbend/config#796 · 1 reaction · Opened Aug 9, 2023
Add info about which signing keys will be used for published artifacts. Open

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

lightbend/config#795 · 2 comments · Opened Aug 8, 2023
how to load the config with substitution details Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

lightbend/config#794 · 3 comments · 1 reaction · Opened Aug 1, 2023
withFallBack is not adding value if not present Open

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

lightbend/config#793 · Opened Jul 21, 2023
Something error when use com.typesafe.config API convert conf file to scala bean class Open

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

lightbend/config#792 · Opened Jul 12, 2023
Resolving Variable Substitutions Between Multiple Config Open

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

lightbend/config#790 · 1 comment · Opened Jul 7, 2023
Community fork? Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

lightbend/config#789 · 7 comments · Opened Jul 6, 2023
introduce method accepting a list of Objects to add a value Open

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

lightbend/config#785 · Opened Jun 9, 2023
Problems with com.typesafe/config and maven-dependency-plugin Open

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

lightbend/config#784 · Opened May 24, 2023
underscore characters Open

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

lightbend/config#781 · 2 comments · Opened Jan 23, 2023
Find a StackOverflowError in config Open

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

lightbend/config#779 · 1 comment · Opened Nov 19, 2022
Find a StackOverflowError in config Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

lightbend/config#778 · Opened Nov 19, 2022
Find a StackOverflowError in config Open

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

lightbend/config#777 · Opened Nov 19, 2022
`ConfigFactory.parseResources()` overrides `ConfigParseOptions.setSyntax()` Open

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

lightbend/config#772 · Opened Jul 13, 2022
Get the line/pos information from a ConfigObject Open

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

lightbend/config#771 · 1 comment · Opened Jun 27, 2022
Inefficient getDuration() parsing - Re-creation of Pattern Open

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

lightbend/config#770 · 2 reactions · Opened Jun 14, 2022
Feature: support java records in addition to java beans as config objects Open

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

lightbend/config#769 · 14 comments · 8 reactions · Opened Jun 8, 2022
include doesn't allow for fully specified files. Open

Difficulty 2/5 1-3 hours Newbie friendliness 52/100

lightbend/config#768 · Opened May 20, 2022
ConfigDocument seems to break include required() statements Open

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

lightbend/config#766 · Opened May 2, 2022
Capability of passing request properties for config.url Open

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

lightbend/config#765 · Opened Apr 26, 2022
hasPathOrNull("") yields an error message that does not correspond to the problem Open

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

lightbend/config#764 · Opened Apr 8, 2022
HOCON Syntax Checker Open

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

lightbend/config#762 · Opened Mar 17, 2022
Support customize RenderComparator when execute SimpleConfigObject#render Open

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

lightbend/config#761 · Opened Mar 11, 2022
Error "replace in parent not possible" when "${?DB_PASSWORD}" set twice in 2 config files? Open

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

lightbend/config#754 · Opened Jan 19, 2022
origin() most methods return empty results. Open

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

lightbend/config#753 · Opened Jan 18, 2022
`+=` operator duplicates elements Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

lightbend/config#752 · Opened Jan 6, 2022
null substitution in array with concatenation Open

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

lightbend/config#751 · 1 comment · Opened Jan 4, 2022
Stronger support for environment variables Open

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

lightbend/config#748 · 1 reaction · Opened Dec 5, 2021
How to save setting Open

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

lightbend/config#747 · 1 comment · Opened Dec 3, 2021
Curious how much work is involved in improving the parser's handling of symbols in unquoted strings Open

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

lightbend/config#746 · 1 comment · Opened Nov 2, 2021
Add support for java.lang.Float field type Open

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

lightbend/config#745 · 1 comment · Opened Nov 1, 2021
Support equivalent of jsonl format (hoconl?) Open

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

lightbend/config#744 · 1 reaction · Opened Oct 27, 2021
Maven pom has invalid packaging "bundle" rather than jar. Open

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

lightbend/config#741 · 3 comments · 1 reaction · Opened Oct 6, 2021
Inconsistent report of cycle of substitutions Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

lightbend/config#740 · Opened Sep 24, 2021
Document EXACT behavior of override_with_env_vars Open

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

lightbend/config#739 · 1 comment · Opened Sep 20, 2021
Is it possible to parse a hocon config written in snake case to Java Pojo in camel case using ConfigBeanFactory ? Open

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

lightbend/config#738 · 1 reaction · Opened Sep 9, 2021
Support ISO 8601 Standard for Duration parsing Open

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

lightbend/config#736 · 1 reaction · Opened Jul 24, 2021

lightbend/config

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