tweak conda env reconstruction

Author: mjohnson541

deps/build.jl

@@ -2,12 +2,9 @@ using PyCall
 if PyCall.pyversion.major != 3 || PyCall.pyversion.minor != 7
     using Conda
     const Pkg = Base.require(Base.PkgId(Base.UUID("44cfe95a-1eb2-52ea-b672-e2afdf69b78f"), "Pkg"))
-    try
-        Conda.add("python=3.7")
-    catch e
-        Conda.add("conda=22")
-        Conda.add("python=3.7")
-    end
+
+    Conda.add("conda=4")
+    Conda.add("python=3.7")
 
     try
         Conda.rm("numpy") #get around MKL problem