chore: fixing travis ci build failure due directory permissions [+]

plus caching for revoked key hashes blacklist

Signed-off-by: Marco Aurélio da Silva <marcoonroad@gmail.com>

.gitignore

@@ -9,3 +9,4 @@ docs/.bundle/config
 docs/_site/
 docs/.jekyll-metadata
 dune-workspace
+.hieroglyphs/

.travis.yml

@@ -14,3 +14,7 @@ env:
 os:
   - linux
   - osx
+
+cache:
+  directories:
+    - .hieroglyphs

Makefile

@@ -31,10 +31,10 @@ doc: build
 #  -  ALCOTEST_SHOW_ERRORS=1
 #
 test:
-	dune build @test/spec/runtest -f --no-buffer -j 1
+	HIEROGLYPHS_ROOT=`pwd`/.hieroglyphs dune build @test/spec/runtest -f --no-buffer -j 1
 
 bench:
-	dune build @test/bench/runtest -f --no-buffer -j 1
+	HIEROGLYPHS_ROOT=`pwd`/.hieroglyphs dune build @test/bench/runtest -f --no-buffer -j 1
 
 install:
 	dune install

lib/blacklist.ml

@@ -12,8 +12,9 @@ let split address =
   let filename = String.sub ~pos:4 ~len:(length - 4) address in
   (directory, filename)
 
-let _HOME = Sys.getenv_exn "HOME"
-let _CONFIG_DIR = _HOME ^ "/.hieroglyphs"
+let _CONFIG_DIR = match Sys.getenv "HIEROGLYPHS_ROOT" with
+  | None -> Sys.getenv_exn "HOME" ^ "/.hieroglyphs"
+  | Some directory -> directory
 let _BLACKLIST_ROOTDIR = _CONFIG_DIR ^ "/blacklist"
 
 let config = Irmin_git.config ~bare:true _BLACKLIST_ROOTDIR