Implemented automatic binary packaging + install script.

.travis.yml

@@ -45,16 +45,14 @@ script:
   - stack --no-terminal test
 
 after_success:
-  # Prepare releases to be deployed.
+  - ./tools/make_binary_package.sh wasp-${TRAVIS_OS_NAME}-x86_64.tar.gz
-  - mkdir travis-releases/
-  - mv "$(stack path --local-install-root)/bin/wasp" "travis-releases/wasp-${TRAVIS_OS_NAME}"
 
 deploy:
   provider: releases
   api_key:
     # Encrypted github access key. Generated with `travis setup --pro releases`.
     secure: 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
-  file: "travis-releases/wasp-${TRAVIS_OS_NAME}"
+  file: "wasp-${TRAVIS_OS_NAME}-x86_64.tar.gz"
   skip_cleanup: true
   on:
     # Whenever we push a tagged commit, binary will be deployed to releases.

waspc/README.md

@@ -17,6 +17,11 @@
 
 [![Build Status](https://ci.appveyor.com/api/projects/status/github/wasp-lang/wasp?branch=master&svg=true)](https://ci.appveyor.com/project/Martinsos/wasp/branch/master)
 
+## Install
+To install latest release, run `curl -sSL https://raw.githubusercontent.com/wasp-lang/wasp/master/waspc/tools/install.sh | sh`!
+
+This will work for linux/osx and will install a prebuilt binary. Since the binary is dynamically built (for now), it might not work if you are missing some packages/libraries on your OS or if your OS distro is very different from the one it was built on.
+
 ## Setup
 Install `stack`.
 

waspc/tools/install.sh

@@ -0,0 +1,178 @@
+#!/bin/sh -e
+
+# NOTE: Heavily inspired by get-stack.hs script for installing stack.
+# https://raw.githubusercontent.com/commercialhaskell/stack/stable/etc/scripts/get-stack.sh
+
+HOME_LOCAL_BIN="$HOME/.local/bin"
+HOME_LOCAL_SHARE="$HOME/.local/share"
+WASP_TEMP_DIR=
+FORCE=
+
+while [ $# -gt 0 ]; do
+    case "$1" in
+        -f|--force)
+            FORCE="true"
+            shift
+            ;;
+        # -d|--dest)
+        #     DEST="$2"
+        #     shift 2
+        #     ;;
+        *)
+            echo "Invalid argument: $1" >&2
+            exit 1
+            ;;
+    esac
+done
+
+main() {
+    trap cleanup_temp_dir EXIT
+    install_based_on_os
+}
+
+install_based_on_os() {
+    case "$(uname)" in
+        "Linux")
+            install_from_bin_package "wasp-linux-x86_64.tar.gz"
+            ;;
+        "Darwin")
+            install_from_bin_package "wasp-osx-x86_64.tar.gz"
+            ;;
+        *)
+            die "Sorry, this installer does not support your operating system: $(uname)."
+    esac
+}
+
+# TODO: Add option to specify which release to download.
+
+# Download a Wasp binary package and install it in $HOME_LOCAL_BIN.
+install_from_bin_package() {
+    PACKAGE_URL="https://github.com/wasp-lang/wasp/releases/latest/download/$1"
+    make_temp_dir
+    info "Downloading binary package to temporary dir and unpacking it there..."
+    dl_to_file "$PACKAGE_URL" "$WASP_TEMP_DIR/$1"
+    mkdir -p "$WASP_TEMP_DIR/wasp"
+    if ! tar xzf "$WASP_TEMP_DIR/$1" -C "$WASP_TEMP_DIR/wasp"; then
+      die "Unpacking binary package failed."
+    fi
+
+    DATA_DST_DIR="$HOME_LOCAL_SHARE"
+    create_dir_if_missing "$DATA_DST_DIR"
+    BIN_DST_DIR="$HOME_LOCAL_BIN"
+    create_dir_if_missing "$BIN_DST_DIR"
+
+    # If our install locations are already occupied (by previous wasp installation or smth else),
+    # inform user that they have to clean it up (or if FORCE is set, we do it for them).
+    if [ -e "$DATA_DST_DIR/wasp" ]; then
+        if [ "$FORCE" = "true" ]; then
+            echo "Removing already existing $DATA_DST_DIR/wasp"
+            rm -Ir "$DATA_DST_DIR/wasp"
+        else
+            die "$DATA_DST_DIR/wasp already exists, remove it manually in order to continue installation."
+        fi
+    fi
+    if [ -e "$BIN_DST_DIR/wasp" ]; then
+        if [ ! "$FORCE" = "true" ]; then
+            die "$BIN_DST_DIR/wasp already exists, remove it manually in order to continue installation."
+        fi
+    fi
+
+    info "Installing Wasp data to $DATA_DST_DIR..."
+    if ! mv "$WASP_TEMP_DIR/wasp" "$DATA_DST_DIR/"; then
+        die "Installing data to $DATA_DST_DIR failed."
+    fi
+
+    info "Installing Wasp executable to $BIN_DST_DIR..."
+    # TODO: I should make sure here that $DATA_DST_DIR is abs path.
+    #  It works for now because we set it to HOME_LOCAL_SHARE which
+    #  we obtained using $HOME which is absolute, but if that changes
+    #  and it is not absolute any more, .sh file generated below
+    #  will not work properly.
+    printf '#!/usr/bin/env bash\nwaspc_datadir=%s/wasp/data %s/wasp/wasp-bin "$@"\n' "$DATA_DST_DIR" "$DATA_DST_DIR" \
+           > "$BIN_DST_DIR/wasp"
+    if ! chmod +x "$BIN_DST_DIR/wasp"; then
+        die "Failed to make $BIN_DST_DIR/wasp executable."
+    fi
+
+    info "Wasp has been successfully installed! Type 'wasp' to start wasping :)."
+
+    if ! on_path "$BIN_DST_DIR"; then
+        info "WARNING: It looks like '$BIN_DST_DIR' is not on your PATH, add it if you want to be able to invoke wasp command directly from anywhere."
+    fi
+}
+
+create_dir_if_missing() {
+    if [ ! -d "$1" ]; then
+        info "$1 does not exist, creating it..."
+        if ! mkdir -p "$1" 2>/dev/null; then
+            die "Could not create directory: $1."
+        fi
+    fi
+}
+
+# Creates a temporary directory, which will be cleaned up automatically
+# when the script finishes
+make_temp_dir() {
+    WASP_TEMP_DIR="$(mktemp -d 2>/dev/null || mktemp -d -t wasp)"
+}
+
+# Cleanup the temporary directory if it's been created.
+# Called automatically when the script exits.
+cleanup_temp_dir() {
+    if [ -n "$WASP_TEMP_DIR" ] ; then
+        rm -rf "$WASP_TEMP_DIR"
+        WASP_TEMP_DIR=""
+    fi
+}
+
+# Print a message to stderr and exit with error code.
+die() {
+    echo "$@" >&2
+    exit 1
+}
+
+info() {
+    echo -e "\033[0;33m{= Wasp installer =}\033[0m" "$@"
+}
+
+# Download a URL to file using 'curl' or 'wget'.
+dl_to_file() {
+    if has_curl ; then
+        if ! curl ${QUIET:+-sS} --fail -L -o "$2" "$1"; then
+            die "curl download failed: $1"
+        fi
+    elif has_wget ; then
+        if ! wget ${QUIET:+-q} "-O$2" "$1"; then
+            die "wget download failed: $1"
+        fi
+    else
+        die "Neither wget nor curl is available, please install one to continue."
+    fi
+}
+
+# Check whether 'wget' command exists.
+has_wget() {
+    has_cmd wget
+}
+
+# Check whether 'curl' command exists.
+has_curl() {
+    has_cmd curl
+}
+
+# Check whether the given command exists.
+has_cmd() {
+    command -v "$1" > /dev/null 2>&1
+}
+
+# Check whether the given (query) path is listed in the PATH environment variable.
+on_path() {
+    # We normalize PATH and query regarding ~ by ensuring ~ is expanded to $HOME, avoiding
+    # false negatives in case where ~ is expanded in query but not in PATH and vice versa.
+    local PATH_BOUNDED=":$PATH:"
+    local PATH_NORMALIZED="${PATH_BOUNDED//:\~/:$HOME}" # Expand all ~ that are after :
+    local QUERY_NORMALIZED=":${1/#\~/$HOME}:" # Expand ~ if it is first character.
+    echo "$PATH_NORMALIZED" | grep -q "$QUERY_NORMALIZED"
+}
+
+main

waspc/tools/make_binary_package.sh

@@ -0,0 +1,18 @@
+#!/bin/sh -e
+
+# Takes already built binary from stack and packages it
+# together with data into .tar.gz package.
+
+DST=$(realpath ${1:-wasp.tar.gz})
+
+TMP_DIR="$(mktemp -d 2>/dev/null || mktemp -d -t wasp-bin-package)"
+
+cp "$(stack path --local-install-root)"/bin/wasp "$TMP_DIR/wasp-bin"
+cp -R "$(stack path --project-root)/data" "$TMP_DIR/data"
+
+cd "$TMP_DIR"
+tar -czf "$DST" *
+
+if [ -n "$TMP_DIR" ]; then rm -rf "$TMP_DIR"; fi
+
+echo "Generated binary package: $DST."