Remove dependency on repoze.lru (#293)

XanaduAI · Nov 1, 2021 · bf6679e · bf6679e
1 parent be0339e
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diff --git a/.github/CHANGELOG.md b/.github/CHANGELOG.md
@@ -3,6 +3,7 @@
 ### New features
 
 ### Improvements
+* Python installation no longer requires [`repoze.lru`](https://pypi.org/project/repoze.lru/). [#293](https://github.com/XanaduAI/thewalrus/pull/293)
 
 ### Bug fixes
 
@@ -12,6 +13,8 @@
 
 This release contains contributions from (in alphabetical order):
 
+Mikhail Andrenkov
+
 ---
 
 # Version 0.16.2

diff --git a/docs/requirements.txt b/docs/requirements.txt
@@ -7,7 +7,6 @@ cython>=0.20
 numba>=0.49.1
 numpy>=1.9
 sympy>=1.5.1
-repoze.lru>=0.7
 scipy>=1.2.1
 breathe==4.29.0
 Jinja2==2.11.3

diff --git a/requirements.txt b/requirements.txt
@@ -4,6 +4,5 @@ numba>=0.48.0
 pytest>=5.4.1
 flaky>=3.7.0
 sympy>=1.5.1
-repoze.lru>=0.7
 cython
 dask[delayed]
diff --git a/setup.py b/setup.py
@@ -110,7 +110,6 @@ def get_version():
         "numba>=0.49.1,<0.54",
         "scipy>=1.2.1",
         "sympy>=1.5.1",
-        "repoze.lru>=0.7",
     ],
     "setup_requires": ["cython", "numpy"],
     "ext_modules": build_extensions(),

diff --git a/thewalrus/_low_rank_haf.py b/thewalrus/_low_rank_haf.py
@@ -15,11 +15,11 @@
 Algorithms for hafnians of low-rank matrices.
 """
 
+from functools import lru_cache
 from itertools import product
 import numpy as np
 from sympy import symbols, expand
 from scipy.special import factorial2
-from repoze.lru import lru_cache
 
 
 @lru_cache(maxsize=1000000)