try

d2layouts/d2cycle/layout.go

@@ -117,7 +117,7 @@ func createCircularArc(edge *d2graph.Edge) {
 			tangentX /= mag
 			tangentY /= mag
 		}
-        const MIN_SEGMENT_LEN = 4.09
+        const MIN_SEGMENT_LEN = 4.05
 
 		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": 196.57699584960938,
-          "y": -37.03300094604492
+          "x": 196.58399963378906,
+          "y": -36.99399948120117
         },
         {
           "x": 197.2519989013672,
@@ -1228,8 +1228,8 @@
           "y": 197.53700256347656
         },
         {
-          "x": 30.55299949645996,
-          "y": 197.68800354003906
+          "x": 30.513999938964844,
+          "y": 197.6929931640625
         },
         {
           "x": 26.5,
@@ -1592,8 +1592,8 @@
           "y": 37.47600173950195
         },
         {
-          "x": -196.57699584960938,
-          "y": 37.03300094604492
+          "x": -196.58399963378906,
+          "y": 36.99399948120117
         },
         {
           "x": -197.2519989013672,
@@ -1972,8 +1972,8 @@
           "y": 111.8030014038086
         },
         {
-          "x": 702.802978515625,
-          "y": 113.14600372314453
+          "x": 702.7899780273438,
+          "y": 113.18399810791016
         },
         {
           "x": 701.4329833984375,
@@ -2336,8 +2336,8 @@
           "y": 186.90899658203125
         },
         {
-          "x": 366.36199951171875,
-          "y": 186.0540008544922
+          "x": 366.33599853515625,
+          "y": 186.0240020751953
         },
         {
           "x": 363.6419982910156,

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

@@ -864,8 +864,8 @@
           "y": -25.47599983215332
         },
         {
-          "x": 208.57699584960938,
-          "y": -25.033000946044922
+          "x": 208.58399963378906,
+          "y": -24.993999481201172
         },
         {
           "x": 209.2519989013672,
@@ -1228,8 +1228,8 @@
           "y": 209.53700256347656
         },
         {
-          "x": 42.553001403808594,
-          "y": 209.68800354003906
+          "x": 42.513999938964844,
+          "y": 209.6929931640625
         },
         {
           "x": 38.5,
@@ -1592,8 +1592,8 @@
           "y": 49.47600173950195
         },
         {
-          "x": -184.57699584960938,
-          "y": 49.03300094604492
+          "x": -184.58399963378906,
+          "y": 48.99399948120117
         },
         {
           "x": -185.2519989013672,
@@ -1972,8 +1972,8 @@
           "y": 123.8030014038086
         },
         {
-          "x": 675.302978515625,
-          "y": 125.14600372314453
+          "x": 675.2899780273438,
+          "y": 125.18399810791016
         },
         {
           "x": 673.9329833984375,
@@ -2336,8 +2336,8 @@
           "y": 198.90899658203125
         },
         {
-          "x": 338.86199951171875,
-          "y": 198.0540008544922
+          "x": 338.83599853515625,
+          "y": 198.0240020751953
         },
         {
           "x": 336.1419982910156,