Added a custom file to correct the error in the sky130_fd_sc_hvl__lsbufhv2lv_1.spice
file in the skywater-pdk library.  The error is that the two independent
power rails, which have the same port name in the SPICE netlist, were split into
two nets, and one of the nets was not declared as a port, making the cell invalid.
The fix gives the two independent nets the same name, which is also invalid, and
not ideal, but it is consistent with the other files (LEF, verilog, etc.) and
the error resolves itself at the next level of hierarchy when running LVS, so it
is usable that way.
diff --git a/VERSION b/VERSION
index 5207e12..00b4e50 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.0.257
+1.0.258
diff --git a/sky130/Makefile.in b/sky130/Makefile.in
index f4e7bb3..32bd1a0 100644
--- a/sky130/Makefile.in
+++ b/sky130/Makefile.in
@@ -1144,11 +1144,13 @@
 	# Install custom additions to standard cell libraries
 	${STAGE} -source ./custom -target ${STAGING_PATH}/${SKY130A} \
 		-gds %l/gds/*.gds options=custom/scripts/gds_import_setup.tcl \
+		-spice %l/spice/*.spice \
 		-library digital sky130_fd_sc_hvl 2>&1 | tee -a ${SKY130A}_make.log
 	# Install all SkyWater digital standard cells.
 	${STAGE} -source ${SKYWATER_LIBS_PATH} -target ${STAGING_PATH}/${SKY130A} \
 		-techlef %l/latest/tech/*.tlef \
 		-spice %l/latest/cells/*/*.spice compile-only \
+			no-copy=custom/sky130_fd_sc_hvl/spice/sky130_fd*.spice \
 			sort=../common/sort_pdkfiles.py \
 			filter=custom/scripts/fix_device_models.py \
 		-cdl %l/latest/cells/*/*.cdl ignore=topography compile-only \
diff --git a/sky130/custom/sky130_fd_sc_hvl/spice/sky130_fd_sc_hvl__lsbufhv2lv_1.spice b/sky130/custom/sky130_fd_sc_hvl/spice/sky130_fd_sc_hvl__lsbufhv2lv_1.spice
new file mode 100644
index 0000000..bb2868e
--- /dev/null
+++ b/sky130/custom/sky130_fd_sc_hvl/spice/sky130_fd_sc_hvl__lsbufhv2lv_1.spice
@@ -0,0 +1,35 @@
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
+
+.subckt sky130_fd_sc_hvl__lsbufhv2lv_1 A LVPWR VGND VNB VPB VPWR X
+X0 a_30_207# a_30_1337# VGND VNB sky130_fd_pr__nfet_g5v0d10v5 w=420000u l=500000u
+X1 VPWR a_30_1337# a_30_207# VPB sky130_fd_pr__pfet_g5v0d10v5 w=420000u l=500000u
+X2 X a_389_141# VGND VNB sky130_fd_pr__nfet_01v8 w=740000u l=150000u
+X3 a_389_1337# a_30_1337# VGND VNB sky130_fd_pr__nfet_g5v0d10v5 w=750000u l=500000u
+X4 a_389_1337# a_30_1337# VGND VNB sky130_fd_pr__nfet_g5v0d10v5 w=750000u l=500000u
+X5 X a_389_141# LVPWR LVPWR sky130_fd_pr__pfet_01v8_hvt w=1.12e+06u l=150000u
+X6 a_389_141# a_389_1337# LVPWR LVPWR sky130_fd_pr__pfet_01v8_hvt w=1.12e+06u l=150000u
+X7 VGND a_30_207# a_389_141# VNB sky130_fd_pr__nfet_g5v0d10v5 w=750000u l=500000u
+X8 a_389_141# a_30_207# VGND VNB sky130_fd_pr__nfet_g5v0d10v5 w=750000u l=500000u
+X9 a_389_141# a_30_207# VGND VNB sky130_fd_pr__nfet_g5v0d10v5 w=750000u l=500000u
+X10 VPWR A a_30_1337# VPB sky130_fd_pr__pfet_g5v0d10v5 w=420000u l=500000u
+X11 a_30_1337# A VGND VNB sky130_fd_pr__nfet_g5v0d10v5 w=420000u l=500000u
+X12 LVPWR a_389_141# a_389_1337# LVPWR sky130_fd_pr__pfet_01v8_hvt w=1.12e+06u l=150000u
+X13 a_389_141# a_30_207# VGND VNB sky130_fd_pr__nfet_g5v0d10v5 w=750000u l=500000u
+X14 VGND a_30_1337# a_389_1337# VNB sky130_fd_pr__nfet_g5v0d10v5 w=750000u l=500000u
+X15 VGND a_30_1337# a_389_1337# VNB sky130_fd_pr__nfet_g5v0d10v5 w=750000u l=500000u
+.ends