diff --git a/pkgs/development/python-modules/pylink-square/default.nix b/pkgs/development/python-modules/pylink-square/default.nix
index d2e365e86b50..8dbc0145b610 100644
--- a/pkgs/development/python-modules/pylink-square/default.nix
+++ b/pkgs/development/python-modules/pylink-square/default.nix
@@ -2,12 +2,17 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+
+  # build-system
   setuptools,
-  mock,
+
+  # dependencies
   psutil,
-  pytestCheckHook,
-  pythonOlder,
   six,
+
+  # tests
+  mock,
+  pytestCheckHook,
 }:
 
 buildPythonPackage rec {
@@ -15,8 +20,6 @@ buildPythonPackage rec {
   version = "1.6.0";
   pyproject = true;
 
-  disabled = pythonOlder "3.7";
-
   src = fetchFromGitHub {
     owner = "square";
     repo = "pylink";
@@ -24,6 +27,11 @@ buildPythonPackage rec {
     hash = "sha256-rkkdnpkl9UHcBDjp6lsFXR1zNn7tH1KeTQ7wV+yJ3m0=";
   };
 
+  patches = [
+    # ERROR: /build/source/setup.cfg:16: unexpected value continuation
+    ./fix-setup-cfg-syntax.patch
+  ];
+
   build-system = [ setuptools ];
 
   dependencies = [
@@ -45,11 +53,11 @@ buildPythonPackage rec {
     "test_set_log_file_success"
   ];
 
-  meta = with lib; {
+  meta = {
     description = "Python interface for the SEGGER J-Link";
     homepage = "https://github.com/square/pylink";
     changelog = "https://github.com/square/pylink/blob/${src.tag}/CHANGELOG.md";
-    license = licenses.asl20;
-    maintainers = with maintainers; [ dump_stack ];
+    license = lib.licenses.asl20;
+    maintainers = with lib.maintainers; [ dump_stack ];
   };
 }
diff --git a/pkgs/development/python-modules/pylink-square/fix-setup-cfg-syntax.patch b/pkgs/development/python-modules/pylink-square/fix-setup-cfg-syntax.patch
new file mode 100644
index 000000000000..a4a3122dc782
--- /dev/null
+++ b/pkgs/development/python-modules/pylink-square/fix-setup-cfg-syntax.patch
@@ -0,0 +1,24 @@
+diff --git a/setup.cfg b/setup.cfg
+index 22f5e1c..fcad35f 100644
+--- a/setup.cfg
++++ b/setup.cfg
+@@ -11,19 +11,3 @@ universal = 1
+ [behave]
+ color = True
+ summary = True
+-
+-[options.extras_require]
+-  dev =
+-    behave==1.2.5
+-    coverage==4.4.1
+-    psutil>=5.2.2
+-    pycodestyle>=2.3.1
+-    setuptools>=70.2.0
+-    six
+-    sphinx==1.4.8
+-    sphinx-argparse==0.1.15
+-    sphinx_rtd_theme==0.2.4
+-    sphinxcontrib-napoleon==0.5.3
+-    wheel
+-  test =
+-    mock==2.0.0