try

d2layouts/d2cycle/layout.go

@@ -117,7 +117,7 @@ func createCircularArc(edge *d2graph.Edge) {
 			tangentX /= mag
 			tangentY /= mag
 		}
-        const MIN_SEGMENT_LEN = 4.255
+        const MIN_SEGMENT_LEN = 4.1
 
 		dx := lastPoint.X - secondLastPoint.X
 		dy := lastPoint.Y - secondLastPoint.Y

e2etests/testdata/txtar/cycle-diagram/dagre/board.exp.json

@@ -864,8 +864,8 @@
           "y": -37.47600173950195
         },
         {
-          "x": 196.5500030517578,
-          "y": -37.19599914550781
+          "x": 196.5760040283203,
+          "y": -37.042999267578125
         },
         {
           "x": 197.2519989013672,
@@ -1228,8 +1228,8 @@
           "y": 197.53700256347656
         },
         {
-          "x": 30.716999053955078,
-          "y": 197.66600036621094
+          "x": 30.562999725341797,
+          "y": 197.68699645996094
         },
         {
           "x": 26.5,
@@ -1592,8 +1592,8 @@
           "y": 37.47600173950195
         },
         {
-          "x": -196.5500030517578,
-          "y": 37.19599914550781
+          "x": -196.5760040283203,
+          "y": 37.042999267578125
         },
         {
           "x": -197.2519989013672,
@@ -1972,8 +1972,8 @@
           "y": 111.8030014038086
         },
         {
-          "x": 702.8590087890625,
-          "y": 112.98999786376953
+          "x": 702.8070068359375,
+          "y": 113.13600158691406
         },
         {
           "x": 701.4329833984375,
@@ -2336,8 +2336,8 @@
           "y": 186.90899658203125
         },
         {
-          "x": 366.47198486328125,
-          "y": 186.177001953125
+          "x": 366.3689880371094,
+          "y": 186.06100463867188
         },
         {
           "x": 363.6419982910156,

e2etests/testdata/txtar/cycle-diagram/elk/board.exp.json

@@ -864,8 +864,8 @@
           "y": -25.47599983215332
         },
         {
-          "x": 208.5500030517578,
-          "y": -25.195999145507812
+          "x": 208.5760040283203,
+          "y": -25.042999267578125
         },
         {
           "x": 209.2519989013672,
@@ -1228,8 +1228,8 @@
           "y": 209.53700256347656
         },
         {
-          "x": 42.71699905395508,
-          "y": 209.66600036621094
+          "x": 42.5629997253418,
+          "y": 209.68699645996094
         },
         {
           "x": 38.5,
@@ -1592,8 +1592,8 @@
           "y": 49.47600173950195
         },
         {
-          "x": -184.5500030517578,
-          "y": 49.19599914550781
+          "x": -184.5760040283203,
+          "y": 49.042999267578125
         },
         {
           "x": -185.2519989013672,
@@ -1972,8 +1972,8 @@
           "y": 123.8030014038086
         },
         {
-          "x": 675.3590087890625,
-          "y": 124.98999786376953
+          "x": 675.3070068359375,
+          "y": 125.13600158691406
         },
         {
           "x": 673.9329833984375,
@@ -2336,8 +2336,8 @@
           "y": 198.90899658203125
         },
         {
-          "x": 338.97198486328125,
-          "y": 198.177001953125
+          "x": 338.8689880371094,
+          "y": 198.06100463867188
         },
         {
           "x": 336.1419982910156,