diff --git a/f4pga/wrappers/sh/__init__.py b/f4pga/wrappers/sh/__init__.py
index e7322fd..1509012 100644
--- a/f4pga/wrappers/sh/__init__.py
+++ b/f4pga/wrappers/sh/__init__.py
@@ -101,7 +101,31 @@ def genfasm(extra_args):
 
 def write_fasm():
     print("[F4PGA] Running (deprecated) write fasm")
-    run_sh(ROOT / SH_SUBDIR / "write_fasm.f4pga.sh")
+    check_call(f"""
+set -e
+source {ROOT / SH_SUBDIR}/vpr_common.f4pga.sh
+parse_args {' '.join(sys_argv[1:])}
+export OUT_NOISY_WARNINGS=noisy_warnings-${{DEVICE}}_fasm.log
+
+TOP="${{EBLIF%.*}}"
+FASM_EXTRA="${{TOP}}_fasm_extra.fasm"
+
+ARCH_DEF="$ARCH_DEF" \
+EBLIF="$EBLIF" \
+DEVICE_NAME="$DEVICE_NAME" \
+VPR_OPTIONS="$VPR_OPTIONS" \
+RR_GRAPH="$RR_GRAPH" \
+  python3 -m f4pga.wrappers.sh.genfasm
+
+echo "FASM extra: $FASM_EXTRA"
+if [ -f $FASM_EXTRA ]; then
+  echo "writing final fasm"
+  cat ${{TOP}}.fasm $FASM_EXTRA > tmp.fasm
+  mv tmp.fasm ${{TOP}}.fasm
+fi
+
+mv vpr_stdout.log fasm.log
+""", env=f4pga_environ, shell=True, executable='/bin/bash')
 
 
 def write_xml_rr_graph():
diff --git a/f4pga/wrappers/sh/quicklogic/write_fasm.f4pga.sh b/f4pga/wrappers/sh/quicklogic/write_fasm.f4pga.sh
deleted file mode 100755
index dd16153..0000000
--- a/f4pga/wrappers/sh/quicklogic/write_fasm.f4pga.sh
+++ /dev/null
@@ -1,43 +0,0 @@
-#!/usr/bin/env bash
-#
-# Copyright (C) 2020-2022 F4PGA 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
-
-set -e
-
-source $(dirname "$0")/vpr_common.f4pga.sh
-parse_args "$@"
-
-TOP="${EBLIF%.*}"
-FASM_EXTRA="${TOP}_fasm_extra.fasm"
-
-export OUT_NOISY_WARNINGS=noisy_warnings-${DEVICE}_fasm.log
-
-ARCH_DEF="$ARCH_DEF" \
-EBLIF="$EBLIF" \
-DEVICE_NAME="$DEVICE_NAME" \
-VPR_OPTIONS="$VPR_OPTIONS" \
-RR_GRAPH="$RR_GRAPH" \
-  python3 -m f4pga.wrappers.sh.genfasm
-
-echo "FASM extra: $FASM_EXTRA"
-if [ -f $FASM_EXTRA ]; then
-  echo "writing final fasm"
-  cat ${TOP}.fasm $FASM_EXTRA > tmp.fasm
-  mv tmp.fasm ${TOP}.fasm
-fi
-
-mv vpr_stdout.log fasm.log
diff --git a/f4pga/wrappers/sh/xc7/write_fasm.f4pga.sh b/f4pga/wrappers/sh/xc7/write_fasm.f4pga.sh
deleted file mode 100755
index dc68e0c..0000000
--- a/f4pga/wrappers/sh/xc7/write_fasm.f4pga.sh
+++ /dev/null
@@ -1,43 +0,0 @@
-#!/usr/bin/env bash
-#
-# Copyright (C) 2020-2022 F4PGA 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
-
-set -e
-
-source $(dirname "$0")/vpr_common.f4pga.sh
-parse_args "$@"
-
-TOP="${EBLIF%.*}"
-FASM_EXTRA=${TOP}_fasm_extra.fasm
-
-export OUT_NOISY_WARNINGS=noisy_warnings-${DEVICE}_fasm.log
-
-ARCH_DEF="$ARCH_DEF" \
-EBLIF="$EBLIF" \
-DEVICE_NAME="$DEVICE_NAME" \
-VPR_OPTIONS="$VPR_OPTIONS" \
-RR_GRAPH="$RR_GRAPH" \
-  python3 -m f4pga.wrappers.sh.genfasm
-
-echo "FASM extra: $FASM_EXTRA"
-if [ -f $FASM_EXTRA ]; then
-  echo "writing final fasm"
-  cat ${TOP}.fasm $FASM_EXTRA > tmp.fasm
-  mv tmp.fasm ${TOP}.fasm
-fi
-
-mv vpr_stdout.log fasm.log