add installation for packaging

tools/installers/install_chainer.sh

@@ -16,6 +16,9 @@ if [ "${cuda_version}" = cpu ] || [ "${cuda_version}" = CPU ]; then
 fi
 
 
+if ! python -c "import packaging.version" &> /dev/null; then
+    python3 -m pip install packaging
+fi
 # espnet requires chiner=6.0.0
 chainer_version=6.0.0
 python_version=$(python3 -c "import sys; print(sys.version.split()[0])")

tools/installers/install_fairscale.sh

@@ -7,6 +7,9 @@ if [ $# != 0 ]; then
     exit 1;
 fi
 
+if ! python -c "import packaging.version" &> /dev/null; then
+    python3 -m pip install packaging
+fi
 torch_version=$(python3 -c "import torch; print(torch.__version__)")
 python_36_plus=$(python3 <<EOF
 from packaging.version import parse as V

tools/installers/install_fairseq.sh

@@ -7,6 +7,9 @@ if [ $# != 0 ]; then
     exit 1;
 fi
 
+if ! python -c "import packaging.version" &> /dev/null; then
+    python3 -m pip install packaging
+fi
 torch_version=$(python3 -c "import torch; print(torch.__version__)")
 python_36_plus=$(python3 <<EOF
 from packaging.version import parse as V

tools/installers/install_k2.sh

@@ -25,6 +25,9 @@ else
     use_conda=$([[ $(conda list -e -c -f --no-pip pytorch 2>/dev/null) =~ pytorch ]] && echo true || echo false)
 fi
 
+if ! python -c "import packaging.version" &> /dev/null; then
+    python3 -m pip install packaging
+fi
 
 python_36_plus=$(python3 <<EOF
 from packaging.version import parse as V

tools/installers/install_longformer.sh

@@ -7,6 +7,9 @@ if [ $# != 0 ]; then
     exit 1;
 fi
 
+if ! python -c "import packaging.version" &> /dev/null; then
+    python3 -m pip install packaging
+fi
 torch_version=$(python3 -c "import torch; print(torch.__version__)")
 python_36_plus=$(python3 <<EOF
 from packaging.version import parse as V

tools/installers/install_s3prl.sh

@@ -9,6 +9,9 @@ if [ $# != 0 ]; then
     exit 1;
 fi
 
+if ! python -c "import packaging.version" &> /dev/null; then
+    python3 -m pip install packaging
+fi
 torch_17_plus=$(python3 <<EOF
 from packaging.version import parse as V
 import torch

tools/installers/install_speechbrain.sh

@@ -7,6 +7,9 @@ if [ $# != 0 ]; then
     exit 1;
 fi
 
+if ! python -c "import packaging.version" &> /dev/null; then
+    python3 -m pip install packaging
+fi
 torch_18_plus=$(python3 <<EOF
 from packaging.version import parse as V
 import torch

tools/installers/install_torch.sh

@@ -126,6 +126,9 @@ log "[INFO] python_version=${python_version}"
 log "[INFO] torch_version=${torch_version}"
 log "[INFO] cuda_version=${cuda_version}"
 
+if ! python -c "import packaging.version" &> /dev/null; then
+    python3 -m pip install packaging
+fi
 
 if $(pytorch_plus 1.11.1); then
     log "[ERROR] This script doesn't support pytorch=${torch_version}"

tools/installers/install_torch_optimizer.sh

@@ -7,6 +7,9 @@ if [ $# != 0 ]; then
     exit 1;
 fi
 
+if ! python -c "import packaging.version" &> /dev/null; then
+    python3 -m pip install packaging
+fi
 torch_version=$(python3 -c "import torch; print(torch.__version__)")
 python_36_plus=$(python3 <<EOF
 from packaging.version import parse as V

tools/installers/install_warp-ctc.sh

@@ -8,6 +8,9 @@ if [ $# != 0 ]; then
     exit 1;
 fi
 
+if ! python -c "import packaging.version" &> /dev/null; then
+    python3 -m pip install packaging
+fi
 torch_17_plus=$(python3 <<EOF
 from packaging.version import parse as V
 import torch

tools/installers/install_warp-transducer.sh

@@ -6,6 +6,9 @@ if [ $# != 0 ]; then
     exit 1;
 fi
 
+if ! python -c "import packaging.version" &> /dev/null; then
+    python3 -m pip install packaging
+fi
 # TODO(kamo): Consider clang case
 # Note: Requires gcc>=4.9.2 to build extensions with pytorch>=1.0
 if python3 -c 'import torch as t;assert t.__version__[0] == "1"' &> /dev/null; then \