CI: drop old nim compiler versions

.github/workflows/ci.yml

@@ -7,7 +7,10 @@ jobs:
       fail-fast: false
       max-parallel: 20
       matrix:
-        nim_version: [version-1-6, version-2-2] # version-2-0] is crashing due to https://github.com/mratsim/constantine/issues/471
+        # version-2-0 is crashing due to https://github.com/mratsim/constantine/issues/471
+        # version-1-6 and version-2-0 have issues with templates in typedef operating on a generic for Fp12 tower in https://github.com/mratsim/constantine/pull/485
+        # Hence we only test and officially sypport 2.2.0, though 99% of Constantine should work on older compilers
+        nim_version: [version-2-2]
         rust_toolchain: [stable] # [beta, nightly]
         go_toolchain: [stable]
         target:

README.md

@@ -137,8 +137,6 @@ See the following documents on the threadpool performance details, design and re
 
 > [!IMPORTANT]
 > Constantine can be compiled with:
-> - Nim v1.6.x,
-> - Nim v2.0.2 to v2.0.8 but not Nim v2.0.0 and Nim 2.0.10 (due to compile-time evaluation crashes)
 > - Nim v2.2.0
 
 ### From Rust