Revert "[bootstrap] Force upgrade to conda=4.8 due to link errors"

This reverts commit 0012b6ed.

bob/devtools/bootstrap.py

@@ -486,9 +486,9 @@ if __name__ == "__main__":
             )
         )
 
-    conda_version = ">=4.8"
-    conda_build_version = ">=3"
-    conda_verify_version = ">=3"
+    conda_version = "4"
+    conda_build_version = "3"
+    conda_verify_version = "3"
 
     conda_verbosity = []
     # if args.verbose >= 2:
@@ -506,9 +506,9 @@ if __name__ == "__main__":
                 "-n",
                 "base",
                 "python",
-                "conda%s" % conda_version,
-                "conda-build%s" % conda_build_version,
-                "conda-verify%s" % conda_verify_version,
+                "conda=%s" % conda_version,
+                "conda-build=%s" % conda_build_version,
+                "conda-verify=%s" % conda_verify_version,
                 "twine",  # required for checking readme of python (zip) distro
             ]
         )
@@ -523,9 +523,9 @@ if __name__ == "__main__":
                 "-n",
                 "base",
                 "python",
-                "conda%s" % conda_version,
-                "conda-build%s" % conda_build_version,
-                "conda-verify%s" % conda_verify_version,
+                "conda=%s" % conda_version,
+                "conda-build=%s" % conda_build_version,
+                "conda-verify=%s" % conda_verify_version,
                 "twine",  # required for checking readme of python (zip) distro
             ]
         )

conda/meta.yaml

@@ -31,9 +31,9 @@ requirements:
     - black >=19
     - click >=7
     - click-plugins
-    - conda >=4.8
-    - conda-build >=3
-    - conda-verify >=3
+    - conda=4
+    - conda-build=3
+    - conda-verify=3
     - certifi
     - docformatter
     - pytz