| Port details |
- py-fsrs Free Spaced Repetition Scheduler
- 6.3.1 devel
 =0      Package not present on quarterly.This port was created during this quarter. It will be in the next quarterly branch but not the current one. - Maintainer: chris.longros@gmail.com
- Port Added: 2026-03-22 16:30:06
- Last Update: 2026-03-22 16:28:34
- Commit Hash: 10affd7
- Also Listed In: python
- License: MIT
- WWW:
- https://github.com/open-spaced-repetition/py-fsrs
- Description:
- Python implementation of the Free Spaced Repetition Scheduler (FSRS)
algorithm. FSRS uses machine learning to analyze personal review history
and optimize flashcard scheduling intervals, replacing fixed-formula
schedulers like SM-2 with data-driven, individualized memory modeling.
Features:
- Implements FSRS-6 algorithm
- Scheduling, card state management, and retrievability calculation
- Optional optimizer module for computing optimal parameters from review data
- Built into Anki since 23.10, with FSRS-6 support in Anki 25.09
-- Christos Longros <chris.longros@gmail.com>
  ¦  ¦  ¦  ¦ 
- Manual pages:
- FreshPorts has no man page information for this port.
- pkg-plist: as obtained via:
make generate-plist - There is no configure plist information for this port.
- USE_RC_SUBR (Service Scripts)
- no SUBR information found for this port
- Dependency lines:
-
- ${PYTHON_PKGNAMEPREFIX}fsrs>0:devel/py-fsrs@${PY_FLAVOR}
- To install the port:
- cd /usr/ports/devel/py-fsrs/ && make install clean
- To add the package, run one of these commands:
- pkg install devel/py-fsrs
- pkg install py311-fsrs
NOTE: If this package has multiple flavors (see below), then use one of them instead of the name specified above.
NOTE: This is a Python port. Instead of py311-fsrs listed in the above command, you can pick from the names under the Packages section.- PKGNAME: py311-fsrs
- Package flavors (<flavor>: <package>)
- distinfo:
- TIMESTAMP = 1774196813
SHA256 (fsrs-6.3.1.tar.gz) = 43c5c6056b97266baf6ebfef9e4cadeb9ac5a4e1b29ffdfb300f445b6e6b15ca
SIZE (fsrs-6.3.1.tar.gz) = 32645
Packages (timestamps in pop-ups are UTC):
- Dependencies
- NOTE: FreshPorts displays only information on required and default dependencies. Optional dependencies are not covered.
- Build dependencies:
-
- py311-setuptools>0 : devel/py-setuptools@py311
- py311-wheel>0 : devel/py-wheel@py311
- python3.11 : lang/python311
- py311-build>=0 : devel/py-build@py311
- py311-installer>=0 : devel/py-installer@py311
- Test dependencies:
-
- python3.11 : lang/python311
- Runtime dependencies:
-
- py311-typing-extensions>0 : devel/py-typing-extensions@py311
- python3.11 : lang/python311
- There are no ports dependent upon this port
Configuration Options:- No options to configure
- Options name:
- devel_py-fsrs
- USES:
- python
- FreshPorts was unable to extract/find any pkg message
- Master Sites:
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Number of commits found: 1
Number of commits found: 1
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