Use sh, not bash

docker/Dockerfile

@@ -16,16 +16,16 @@ ADD . /ligo
 # the upcoming scripts
 WORKDIR /ligo
 
-# Setup a custom opam repository where ligo is published
-RUN bash scripts/setup_ligo_opam_repository.sh
-
 # Install required native dependencies
-RUN bash scripts/install_native_dependencies.sh
+RUN sh scripts/install_native_dependencies.sh
+
+# Setup a custom opam repository where ligo is published
+RUN sh scripts/setup_ligo_opam_repository.sh
 
 RUN opam update
 
 # Install ligo
-RUN bash scripts/install_ligo_with_dependencies.sh
+RUN sh scripts/install_ligo_with_dependencies.sh
 
 # Use the ligo binary as a default command
 ENTRYPOINT [ "/home/opam/.opam/4.06/bin/ligo" ]

scripts/build_docker_image.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
-set -euET -o pipefail
+#!/bin/sh
+set -e
 
 docker build -t ligolang/ligo -f docker/Dockerfile .

scripts/install_ligo_with_dependencies.sh

@@ -1,4 +1,5 @@
-#!/bin/bash
-set -euET -o pipefail
+#!/bin/sh
+set -e
 
-cd src && opam install . --yes
+cd src
+opam install . --yes

scripts/install_opam.sh

@@ -1,5 +1,5 @@
-#!/bin/bash
-set -euET -o pipefail
+#!/bin/sh
+set -e
 
 # TODO: this has many different modes of failure (file temp.opam-2.0.1-x86_64-linux.download-in-progress already exists, /usr/local/bin/opam already exists and is a directory or hard link, …)
 # Try to improve these aspects.

scripts/installer.sh

@@ -1,5 +1,5 @@
-#!/bin/bash
-set -euET -o pipefail
+#!/bin/sh
+set -e
 
 # You can run this installer like this:
 # curl https://gitlab.com/ligolang/ligo/blob/master/scripts/installer.sh | bash
@@ -68,7 +68,7 @@ else
       && (umask 0600 > /dev/null 2>&1; UMASK=0600 touch /usr/local/bin/.temp.ligo.before-atomic-move) \
       && chmod 0600 /usr/local/bin/.temp.ligo.before-atomic-move \
       && cat > /usr/local/bin/.temp.ligo.before-atomic-move \
-    ) || rm /usr/local/bin/.temp.ligo.before-atomic-move'
+    ) || (rm /usr/local/bin/.temp.ligo.before-atomic-move; exit 1)'
 
   # sudo     become root (sudo) for the rest of the commands
   #   (      subshell (to clean up temporary file if anything goes wrong)
@@ -88,7 +88,7 @@ else
       && if test -d /usr/local/bin/ligo; then printf "/usr/local/bin/ligo already exists and is a directory, cancelling installation"'\\\\'n; rm /usr/local/bin/.temp.ligo.before-atomic-move; \
          elif test -L /usr/local/bin/ligo; then printf "/usr/local/bin/ligo already exists and is a symbolic link, cancelling installation"'\\\\'n; rm /usr/local/bin/.temp.ligo.before-atomic-move; \
          else mv -i /usr/local/bin/.temp.ligo.before-atomic-move /usr/local/bin/ligo; fi \
-    ) || rm /usr/local/bin/.temp.ligo.before-atomic-move'
+    ) || (rm /usr/local/bin/.temp.ligo.before-atomic-move; exit 1)'
 
   # Installation finished, try running 'ligo' from your CLI
   printf \\n'Installation successful, try to run '\''ligo --help'\'' now.'\\n

scripts/ligo.sh

@@ -1,6 +1,9 @@
-#!/bin/bash
-if true; then
-  set -euET -o pipefail
+#!/bin/sh
+set -e
+if [ test "x$PWD" = "x" ]; then
+  echo "Cannot detect the current directory, the environment variable PWD is empty."
+  exit 1
+else
   docker run -it -v "$PWD":"$PWD" -w "$PWD" ligolang/ligo:latest "$@"
 fi
 # Do not remove the next line. It is used as an approximate witness that the download of this file was complete. This string should not appear anywhere else in the file.

scripts/setup_ligo_opam_repository.sh

@@ -1,5 +1,5 @@
-#!/bin/bash
-set -euET -o pipefail
+#!/bin/sh
+set -e
 
 vendors/opam-repository-tools/rewrite-local-opam-repository.sh
 opam repo add ligo-opam-repository ./vendors/ligo-opam-repository-local-generated

vendors/opam-repository-tools/rewrite-local-opam-repository.sh

@@ -1,13 +1,55 @@
-#!/bin/bash
-set -euET -o pipefail
-main(){
-  root_dir="$(pwd | sed -e 's/\\/\\\\/' | sed -e 's/&/\\\&/' | sed -e 's/~/\\~/')"
-  rm -fr vendors/ligo-opam-repository-local-generated
-  mkdir vendors/ligo-opam-repository-local-generated
-  cp -a index.tar.gz packages repo urls.txt vendors/ligo-opam-repository-local-generated
-  cd vendors/ligo-opam-repository-local-generated
-  grep -r --null -l src: | grep -z 'opam$' | xargs -0 \
-    sed -i -e 's~src:  *"https://gitlab.com/ligolang/ligo/-/archive/master/ligo\.tar\.gz"~src: "file://'"$root_dir"'"~'
-  # TODO: run the update.sh script adequately to regenerate the index.tar.gz etc. in the local repo
-}
-if main; then exit 0; else exit $?; fi
+#!/bin/sh
+
+# Stop on error.
+set -e
+
+# Defensive checks. We're going to remove an entire folder so this script is somewhat dangerous. Better check in advance what can go wrong in the entire execution of the script.
+if test -e index.tar.gz && test -e packages && test -e repo && test -e urls.txt; then
+  if test -d vendors/; then
+   if test -d "$PWD"; then
+      if command -v sed   >/dev/null 2>&1 \
+      && command -v rm    >/dev/null 2>&1 \
+      && command -v mkdir >/dev/null 2>&1 \
+      && command -v cp    >/dev/null 2>&1 \
+      && command -v find  >/dev/null 2>&1 \
+      && command -v xargs >/dev/null 2>&1 \
+      && command -v opam  >/dev/null 2>&1; then
+
+      # Escape the current directory, to be used as the replacement part of the sed regular expression
+      escaped_project_root="$(printf %s "$PWD" | sed -e 's/\\/\\\\/' | sed -e 's/&/\\\&/' | sed -e 's/~/\\~/')"
+
+      # Recreate vendors/ligo-opam-repository-local-generated which contains a copy of the files related to the opam repository
+      rm -fr vendors/ligo-opam-repository-local-generated
+      mkdir vendors/ligo-opam-repository-local-generated
+      cp -pR index.tar.gz packages repo urls.txt vendors/ligo-opam-repository-local-generated
+
+      # Rewrite the URLs in the opam repository to point to the project root
+      (
+        cd vendors/ligo-opam-repository-local-generated
+        find . -type f -name opam -print0 | | xargs -0 sed -i -e 's~src:  *"https://gitlab.com/ligolang/ligo/-/archive/master/ligo\.tar\.gz"~src: "file://'"$escaped_project_root"'"~'
+      )
+
+      # Regenerate the index.tar.gz etc. in the local repo
+      (
+        cd vendors/ligo-opam-repository-local-generated
+        opam admin index
+        opam admin cache
+      )
+      else
+        echo "One of the following commands is unavailable: sed rm mkdir cp find xargs opam."
+        exit 1
+      fi
+    else
+      echo "Unable to access the current directory as indicated by PWD. Was the CWD of the current shell removed?"
+      exit 1
+    fi
+
+  else
+    echo "Cannot find the directory vendors/ in the current directory"
+    exit 1
+  fi
+else
+  echo "Cannot find some of the following files in the current directory"
+  echo "index.tar.gz packages repo urls.txt"
+  exit 1
+fi