diff --git a/sky130/openlane/config.tcl b/sky130/openlane/config.tcl
index 9c4ecb8..de727d3 100755
--- a/sky130/openlane/config.tcl
+++ b/sky130/openlane/config.tcl
@@ -10,12 +10,12 @@
 
 # Technology LEF
 #ifdef EF_FORMAT
-set ::env(TECH_LEF) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/techLEF/$::env(PDK_VARIANT)/$::env(PDK_VARIANT).tlef"
-set ::env(CELLS_LEF) [glob "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lef/$::env(PDK_VARIANT)/*.lef"]
+set ::env(TECH_LEF) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/techLEF/$::env(STD_CELL_LIBRARY)/$::env(STD_CELL_LIBRARY).tlef"
+set ::env(CELLS_LEF) [glob "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lef/$::env(STD_CELL_LIBRARY)/*.lef"]
 set ::env(GPIO_PADS_LEF) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lef/sky130_fd_io/sky130_fd_io.lef"
 #else (!EF_FORMAT)
-set ::env(TECH_LEF) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/techlef/$::env(PDK_VARIANT).tlef"
-set ::env(CELLS_LEF) [glob "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lef/*.lef"]
+set ::env(TECH_LEF) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/techlef/$::env(STD_CELL_LIBRARY).tlef"
+set ::env(CELLS_LEF) [glob "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lef/*.lef"]
 set ::env(GPIO_PADS_LEF) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/sky130_fd_io/lef/sky130_fd_io.lef"
 #endif (!EF_FORMAT)
 
@@ -36,6 +36,6 @@
 set ::env(FP_TAPCELL_DIST) 14
 
 # Tracks info
-set ::env(TRACKS_INFO_FILE) "$::env(PDK_ROOT)/$::env(PDK)/libs.tech/openlane/$::env(PDK_VARIANT)/tracks.info"
+set ::env(TRACKS_INFO_FILE) "$::env(PDK_ROOT)/$::env(PDK)/libs.tech/openlane/$::env(STD_CELL_LIBRARY)/tracks.info"
 
 set ::env(GLB_RT_L1_ADJUSTMENT) 0.99
diff --git a/sky130/openlane/sky130_fd_sc_hd/config.tcl b/sky130/openlane/sky130_fd_sc_hd/config.tcl
index 7c243e7..739787a 100755
--- a/sky130/openlane/sky130_fd_sc_hd/config.tcl
+++ b/sky130/openlane/sky130_fd_sc_hd/config.tcl
@@ -2,13 +2,13 @@
 # Technology lib
 
 #ifdef EF_FORMAT
-set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(PDK_VARIANT)/sky130_fd_sc_hd__tt_025C_1v80.lib"
-set ::env(LIB_MAX) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(PDK_VARIANT)/sky130_fd_sc_hd__ff_n40C_1v95.lib"
-set ::env(LIB_MIN) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(PDK_VARIANT)/sky130_fd_sc_hd__ss_100C_1v60.lib"
+set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(STD_CELL_LIBRARY)/sky130_fd_sc_hd__tt_025C_1v80.lib"
+set ::env(LIB_FASTEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(STD_CELL_LIBRARY)/sky130_fd_sc_hd__ff_n40C_1v95.lib"
+set ::env(LIB_SLOWEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(STD_CELL_LIBRARY)/sky130_fd_sc_hd__ss_100C_1v60.lib"
 #else (!EF_FORMAT)
-set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lib/sky130_fd_sc_hd__tt_025C_1v80.lib"
-set ::env(LIB_MAX) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lib/sky130_fd_sc_hd__ff_n40C_1v95.lib"
-set ::env(LIB_MIN) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lib/sky130_fd_sc_hd__ss_100C_1v60.lib"
+set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lib/sky130_fd_sc_hd__tt_025C_1v80.lib"
+set ::env(LIB_FASTEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lib/sky130_fd_sc_hd__ff_n40C_1v95.lib"
+set ::env(LIB_SLOWEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lib/sky130_fd_sc_hd__ss_100C_1v60.lib"
 #endif (!EF_FORMAT)
 
 set ::env(LIB_TYPICAL) $::env(LIB_SYNTH)
diff --git a/sky130/openlane/sky130_fd_sc_hdll/config.tcl b/sky130/openlane/sky130_fd_sc_hdll/config.tcl
index c1e4d0b..0435e79 100755
--- a/sky130/openlane/sky130_fd_sc_hdll/config.tcl
+++ b/sky130/openlane/sky130_fd_sc_hdll/config.tcl
@@ -2,13 +2,13 @@
 # Technology lib
 
 #ifdef EF_FORMAT
-set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(PDK_VARIANT)/sky130_fd_sc_hdll__tt_025C_1v80.lib"
-set ::env(LIB_MAX) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(PDK_VARIANT)/sky130_fd_sc_hdll__ff_n40C_1v95.lib"
-set ::env(LIB_MIN) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(PDK_VARIANT)/sky130_fd_sc_hdll__ss_100C_1v60.lib"
+set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(STD_CELL_LIBRARY)/sky130_fd_sc_hdll__tt_025C_1v80.lib"
+set ::env(LIB_FASTEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(STD_CELL_LIBRARY)/sky130_fd_sc_hdll__ff_n40C_1v95.lib"
+set ::env(LIB_SLOWEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(STD_CELL_LIBRARY)/sky130_fd_sc_hdll__ss_100C_1v60.lib"
 #else (!EF_FORMAT)
-set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lib/sky130_fd_sc_hdll__tt_025C_1v80.lib"
-set ::env(LIB_MAX) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lib/sky130_fd_sc_hdll__ff_n40C_1v95.lib"
-set ::env(LIB_MIN) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lib/sky130_fd_sc_hdll__ss_100C_1v60.lib"
+set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lib/sky130_fd_sc_hdll__tt_025C_1v80.lib"
+set ::env(LIB_FASTEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lib/sky130_fd_sc_hdll__ff_n40C_1v95.lib"
+set ::env(LIB_SLOWEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lib/sky130_fd_sc_hdll__ss_100C_1v60.lib"
 #endif (!EF_FORMAT)
 
 
@@ -55,11 +55,11 @@
 set ::env(DIODE_CELL_PIN) "DIODE"
 
 set ::env(CELL_PAD) 8
-set ::env(CELL_PAD_EXECLUDE) "$::env(PDK_VARIANT)__tap* $::env(PDK_VARIANT)__decap* $::env(PDK_VARIANT)__fill*"
+set ::env(CELL_PAD_EXECLUDE) "$::env(STD_CELL_LIBRARY)__tap* $::env(STD_CELL_LIBRARY)__decap* $::env(STD_CELL_LIBRARY)__fill*"
 
 # Clk Buffers info CTS data
-set ::env(ROOT_CLK_BUFFER) $::env(PDK_VARIANT)__clkbuf_16
-set ::env(CLK_BUFFER) $::env(PDK_VARIANT)__clkbuf_4
+set ::env(ROOT_CLK_BUFFER) $::env(STD_CELL_LIBRARY)__clkbuf_16
+set ::env(CLK_BUFFER) $::env(STD_CELL_LIBRARY)__clkbuf_4
 set ::env(CLK_BUFFER_INPUT) A
 set ::env(CLK_BUFFER_OUTPUT) X
 set ::env(CTS_CLK_BUFFER_LIST) "sky130_fd_sc_hdll__clkbuf_1 sky130_fd_sc_hdll__clkbuf_2 sky130_fd_sc_hdll__clkbuf_4 sky130_fd_sc_hdll__clkbuf_8"
diff --git a/sky130/openlane/sky130_fd_sc_hs/config.tcl b/sky130/openlane/sky130_fd_sc_hs/config.tcl
index eed0033..fbd5ff2 100755
--- a/sky130/openlane/sky130_fd_sc_hs/config.tcl
+++ b/sky130/openlane/sky130_fd_sc_hs/config.tcl
@@ -2,13 +2,13 @@
 # Technology lib
 
 #ifdef EF_FORMAT
-set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(PDK_VARIANT)/sky130_fd_sc_hs__tt_025C_1v80.lib"
-set ::env(LIB_MAX) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(PDK_VARIANT)/sky130_fd_sc_hs__ff_n40C_1v95.lib"
-set ::env(LIB_MIN) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(PDK_VARIANT)/sky130_fd_sc_hs__ss_100C_1v60.lib"
+set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(STD_CELL_LIBRARY)/sky130_fd_sc_hs__tt_025C_1v80.lib"
+set ::env(LIB_FASTEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(STD_CELL_LIBRARY)/sky130_fd_sc_hs__ff_n40C_1v95.lib"
+set ::env(LIB_SLOWEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(STD_CELL_LIBRARY)/sky130_fd_sc_hs__ss_100C_1v60.lib"
 #else (!EF_FORMAT)
-set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lib/sky130_fd_sc_hs__tt_025C_1v80.lib"
-set ::env(LIB_MAX) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lib/sky130_fd_sc_hs__ff_n40C_1v95.lib"
-set ::env(LIB_MIN) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lib/sky130_fd_sc_hs__ss_100C_1v60.lib"
+set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lib/sky130_fd_sc_hs__tt_025C_1v80.lib"
+set ::env(LIB_FASTEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lib/sky130_fd_sc_hs__ff_n40C_1v95.lib"
+set ::env(LIB_SLOWEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lib/sky130_fd_sc_hs__ss_100C_1v60.lib"
 #endif (!EF_FORMAT)
 
 set ::env(LIB_TYPICAL) $::env(LIB_SYNTH)
diff --git a/sky130/openlane/sky130_fd_sc_hvl/config.tcl b/sky130/openlane/sky130_fd_sc_hvl/config.tcl
index ffe1f48..159b208 100644
--- a/sky130/openlane/sky130_fd_sc_hvl/config.tcl
+++ b/sky130/openlane/sky130_fd_sc_hvl/config.tcl
@@ -2,13 +2,13 @@
 # Technology lib
 
 #ifdef EF_FORMAT
-set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(PDK_VARIANT)/sky130_fd_sc_hvl__tt_025C_3v30.lib"
-set ::env(LIB_MAX) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(PDK_VARIANT)/sky130_fd_sc_hvl__ff_n40C_5v50.lib"
-set ::env(LIB_MIN) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(PDK_VARIANT)/sky130_fd_sc_hvl__ss_150C_1v65.lib"
+set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(STD_CELL_LIBRARY)/sky130_fd_sc_hvl__tt_025C_3v30.lib"
+set ::env(LIB_FASTEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(STD_CELL_LIBRARY)/sky130_fd_sc_hvl__ff_n40C_5v50.lib"
+set ::env(LIB_SLOWEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(STD_CELL_LIBRARY)/sky130_fd_sc_hvl__ss_150C_1v65.lib"
 #else (!EF_FORMAT)
-set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lib/sky130_fd_sc_hvl__tt_025C_3v30.lib"
-set ::env(LIB_MAX) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lib/sky130_fd_sc_hvl__ff_n40C_5v50.lib"
-set ::env(LIB_MIN) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lib/sky130_fd_sc_hvl__ss_150C_1v65.lib"
+set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lib/sky130_fd_sc_hvl__tt_025C_3v30.lib"
+set ::env(LIB_FASTEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lib/sky130_fd_sc_hvl__ff_n40C_5v50.lib"
+set ::env(LIB_SLOWEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lib/sky130_fd_sc_hvl__ss_150C_1v65.lib"
 #endif (!EF_FORMAT)
 
 
diff --git a/sky130/openlane/sky130_fd_sc_ls/config.tcl b/sky130/openlane/sky130_fd_sc_ls/config.tcl
index 3394be3..c5e0a75 100755
--- a/sky130/openlane/sky130_fd_sc_ls/config.tcl
+++ b/sky130/openlane/sky130_fd_sc_ls/config.tcl
@@ -2,13 +2,13 @@
 # Technology lib
 
 #ifdef EF_FORMAT
-set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(PDK_VARIANT)/sky130_fd_sc_ls__tt_025C_1v80.lib"
-set ::env(LIB_MAX) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(PDK_VARIANT)/sky130_fd_sc_ls__ff_n40C_1v95.lib"
-set ::env(LIB_MIN) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(PDK_VARIANT)/sky130_fd_sc_ls__ss_100C_1v60.lib"
+set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(STD_CELL_LIBRARY)/sky130_fd_sc_ls__tt_025C_1v80.lib"
+set ::env(LIB_FASTEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(STD_CELL_LIBRARY)/sky130_fd_sc_ls__ff_n40C_1v95.lib"
+set ::env(LIB_SLOWEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(STD_CELL_LIBRARY)/sky130_fd_sc_ls__ss_100C_1v60.lib"
 #else (!EF_FORMAT)
-set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lib/sky130_fd_sc_ls__tt_025C_1v80.lib"
-set ::env(LIB_MAX) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lib/sky130_fd_sc_ls__ff_n40C_1v95.lib"
-set ::env(LIB_MIN) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lib/sky130_fd_sc_ls__ss_100C_1v60.lib"
+set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lib/sky130_fd_sc_ls__tt_025C_1v80.lib"
+set ::env(LIB_FASTEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lib/sky130_fd_sc_ls__ff_n40C_1v95.lib"
+set ::env(LIB_SLOWEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lib/sky130_fd_sc_ls__ss_100C_1v60.lib"
 #endif (!EF_FORMAT)
 
 set ::env(LIB_TYPICAL) $::env(LIB_SYNTH)
@@ -54,11 +54,11 @@
 set ::env(DIODE_CELL_PIN) "DIODE"
 
 set ::env(CELL_PAD) 8
-set ::env(CELL_PAD_EXECLUDE) "$::env(PDK_VARIANT)__tap* $::env(PDK_VARIANT)__decap* $::env(PDK_VARIANT)__fill*"
+set ::env(CELL_PAD_EXECLUDE) "$::env(STD_CELL_LIBRARY)__tap* $::env(STD_CELL_LIBRARY)__decap* $::env(STD_CELL_LIBRARY)__fill*"
 
 # Clk Buffers info CTS data
-set ::env(ROOT_CLK_BUFFER) $::env(PDK_VARIANT)__clkbuf_16
-set ::env(CLK_BUFFER) $::env(PDK_VARIANT)__clkbuf_4
+set ::env(ROOT_CLK_BUFFER) $::env(STD_CELL_LIBRARY)__clkbuf_16
+set ::env(CLK_BUFFER) $::env(STD_CELL_LIBRARY)__clkbuf_4
 set ::env(CLK_BUFFER_INPUT) A
 set ::env(CLK_BUFFER_OUTPUT) X
 set ::env(CTS_CLK_BUFFER_LIST) "sky130_fd_sc_ls__clkbuf_1 sky130_fd_sc_ls__clkbuf_2 sky130_fd_sc_ls__clkbuf_4 sky130_fd_sc_ls__clkbuf_8"
diff --git a/sky130/openlane/sky130_fd_sc_ms/config.tcl b/sky130/openlane/sky130_fd_sc_ms/config.tcl
index 9c4bd97..fbeb569 100755
--- a/sky130/openlane/sky130_fd_sc_ms/config.tcl
+++ b/sky130/openlane/sky130_fd_sc_ms/config.tcl
@@ -2,13 +2,13 @@
 # Technology lib
 
 #ifdef EF_FORMAT
-set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(PDK_VARIANT)/sky130_fd_sc_ms__tt_025C_1v80.lib"
-set ::env(LIB_MAX) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(PDK_VARIANT)/sky130_fd_sc_ms__ff_n40C_1v95.lib"
-set ::env(LIB_MIN) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(PDK_VARIANT)/sky130_fd_sc_ms__ss_100C_1v60.lib"
+set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(STD_CELL_LIBRARY)/sky130_fd_sc_ms__tt_025C_1v80.lib"
+set ::env(LIB_FASTEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(STD_CELL_LIBRARY)/sky130_fd_sc_ms__ff_n40C_1v95.lib"
+set ::env(LIB_SLOWEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/lib/$::env(STD_CELL_LIBRARY)/sky130_fd_sc_ms__ss_100C_1v60.lib"
 #else (!EF_FORMAT)
-set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lib/sky130_fd_sc_ms__tt_025C_1v80.lib"
-set ::env(LIB_MAX) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lib/sky130_fd_sc_ms__ff_n40C_1v95.lib"
-set ::env(LIB_MIN) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(PDK_VARIANT)/lib/sky130_fd_sc_ms__ss_100C_1v60.lib"
+set ::env(LIB_SYNTH) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lib/sky130_fd_sc_ms__tt_025C_1v80.lib"
+set ::env(LIB_FASTEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lib/sky130_fd_sc_ms__ff_n40C_1v95.lib"
+set ::env(LIB_SLOWEST) "$::env(PDK_ROOT)/$::env(PDK)/libs.ref/$::env(STD_CELL_LIBRARY)/lib/sky130_fd_sc_ms__ss_100C_1v60.lib"
 #endif (!EF_FORMAT)
 
 set ::env(LIB_TYPICAL) $::env(LIB_SYNTH)
@@ -55,11 +55,11 @@
 set ::env(DIODE_INSERTION_STRATEGY) 0 
 
 set ::env(CELL_PAD) 8
-set ::env(CELL_PAD_EXECLUDE) "$::env(PDK_VARIANT)__tap* $::env(PDK_VARIANT)__decap* $::env(PDK_VARIANT)__fill*"
+set ::env(CELL_PAD_EXECLUDE) "$::env(STD_CELL_LIBRARY)__tap* $::env(STD_CELL_LIBRARY)__decap* $::env(STD_CELL_LIBRARY)__fill*"
 
 # Clk Buffers info CTS data
-set ::env(ROOT_CLK_BUFFER) $::env(PDK_VARIANT)__clkbuf_16
-set ::env(CLK_BUFFER) $::env(PDK_VARIANT)__clkbuf_4
+set ::env(ROOT_CLK_BUFFER) $::env(STD_CELL_LIBRARY)__clkbuf_16
+set ::env(CLK_BUFFER) $::env(STD_CELL_LIBRARY)__clkbuf_4
 set ::env(CLK_BUFFER_INPUT) A
 set ::env(CLK_BUFFER_OUTPUT) X
 set ::env(CTS_CLK_BUFFER_LIST) "sky130_fd_sc_ms__clkbuf_2 sky130_fd_sc_ms__clkbuf_4 sky130_fd_sc_ms__clkbuf_8"