chore: Updates for Crystal 1.2

We now need a custom copy of the sources to build, because the main
release distribution doesn't have the markd sources or the required LLVM
object files.

Closes elbywan#29

Dockerfile

@@ -1,11 +1,17 @@
-FROM crystallang/crystal:1.1.1-alpine
+FROM crystallang/crystal:1.2.2-alpine
 
 WORKDIR /app
 
 # Add llvm deps.
 RUN apk add --update --no-cache --force-overwrite \
-  llvm10-dev llvm10-static g++
+      llvm10-dev llvm10-static g++ make
 
 # Build crystalline.
 COPY . /app/
-RUN shards build crystalline --no-debug --progress --stats --production --static --release -Dpreview_mt --ignore-crystal-version
+
+RUN git clone -b 1.2.2 --depth=1 https://github.com/crystal-lang/crystal \
+      && make -C crystal llvm_ext \
+      && CRYSTAL_PATH=crystal/src:lib shards build crystalline \
+          --no-debug --progress --stats --production --static --release \
+          -Dpreview_mt --ignore-crystal-version \
+      && rm -rf crystal

README.md

@@ -30,12 +30,12 @@ Building from source does take a long time._
 
 ### Compatibility
 
-| Crystal   | Crystalline        |
-| --------- | ------------------ |
-| **1.1.X** | **0.4.X (latest)** |
-| 1.0.X     | 0.3.X              |
-| 0.36.X    | 0.2.X              |
-| 0.35.1    | 0.1.X              |
+| Crystal         | Crystalline        |
+| --------------- | ------------------ |
+| **1.1.X,1.2.X** | **master**         |
+| 1.0.X           | 0.3.X              |
+| 0.36.X          | 0.2.X              |
+| 0.35.1          | 0.1.X              |
 
 ### Pre-built binaries
 
@@ -77,6 +77,14 @@ build.](https://github.com/elbywan/crystalline/actions)
 **Warning: this can take a long time! (several minutes - up to 20 minutes,
 depending on your hardware)**
 
+Make sure you clone a copy of the [Crystal sources](https://github.com/crystal-lang/crystal)
+corresponding to the version of the compiler you're running. For instance, for
+version 1.2.2, you'd have:
+
+```
+$ git clone https://github.com/crystal-lang/crystal -b 1.2.2
+```
+
 #### Scoped install
 
 In the `.shard.yml` file:
@@ -92,7 +100,7 @@ Then:
 
 ```sh
 # Produces a binary at ./bin/crystalline
-shards build crystalline --release --no-debug --progress -Dpreview_mt
+CRYSTAL_PATH=$PATH_TO_CRYSTAL_SOURCES/src shards build crystalline --release --no-debug --progress -Dpreview_mt
 ```
 
 #### Global install
@@ -101,7 +109,7 @@ shards build crystalline --release --no-debug --progress -Dpreview_mt
 git clone https://github.com/elbywan/crystalline
 cd crystalline
 mkdir bin
-crystal build ./src/crystalline.cr  -o ./bin/crystalline --release --no-debug --progress  -Dpreview_mt
+CRYSTAL_PATH=$PATH_TO_CRYSTAL_SOURCES/src:lib crystal build ./src/crystalline.cr  -o ./bin/crystalline --release --no-debug --progress -Dpreview_mt
 ```
 
 #### Known Build Issues

src/crystalline/lsp/ext/enum.cr

@@ -13,7 +13,7 @@ struct Enum
         super
       end
 
-      def to_json(builder : JSON::Builder) : IO
+      def to_json(builder : JSON::Builder)
         builder.string self.to_s{% if downcase %}.downcase{% end %}
       end