utils/__init__.py: Only import "setup_logging" from "logging.py"

Since some modules (e.g., healpix.py) under "utils" involves Numba JIT
optimization, which significantly slows the start-up speed, even some
consumers (e.g., bin/fg21sim-webui) do not need them at all.

Fix various import statements of other modules.

NOTE: not test at the moment!

3 files changed, 8 insertions, 3 deletions

diff --git a/bin/healpix2hpx b/bin/healpix2hpx
index 6f30795..fda9627 100755
--- a/bin/healpix2hpx
+++ b/bin/healpix2hpx
@@ -17,7 +17,8 @@ from astropy.io import fits
 
 import fg21sim
 from fg21sim.configs import configs
-from fg21sim.utils import healpix2hpx, setup_logging
+from fg21sim.utils import setup_logging
+from fg21sim.utils.healpix import healpix2hpx
 
 
 def main():
diff --git a/bin/hpx2healpix b/bin/hpx2healpix
index bbc3e0d..5d48987 100755
--- a/bin/hpx2healpix
+++ b/bin/hpx2healpix
@@ -15,7 +15,9 @@ import logging
 
 import fg21sim
 from fg21sim.configs import configs
-from fg21sim.utils import hpx2healpix, write_fits_healpix, setup_logging
+from fg21sim.utils import setup_logging
+from fg21sim.utils.healpix import hpx2healpix
+from fg21sim.utils.fits import write_fits_healpix
 
 
 def main():
diff --git a/bin/zea2healpix b/bin/zea2healpix
index 334bf6d..dde7dbd 100755
--- a/bin/zea2healpix
+++ b/bin/zea2healpix
@@ -22,7 +22,9 @@ import logging
 
 import fg21sim
 from fg21sim.configs import configs
-from fg21sim.utils import zea2healpix, write_fits_healpix, setup_logging
+from fg21sim.utils import setup_logging
+from fg21sim.utils.reproject import zea2healpix
+from fg21sim.utils.fits import write_fits_healpix
 
 
 def main():