Add a configuration flag for setting the environment (#142)

src/sandbox.jl

@@ -71,6 +71,14 @@ function setup_generic_sandbox(config::Configuration, cmd::Cmd;
         env["TERM"] = ENV["TERM"]
     end
 
+    for flag in config.environment
+        key, value = split(flag, '='; limit=2)
+        if (value[begin] == value[end] == '"') || (value[begin] == value[end] == '\'')
+            value = value[2:end-1]
+        end
+        env[key] = value
+    end
+
     if config.xvfb
         lock(xvfb_lock) do
             if xvfb_proc[] === nothing || !process_running(xvfb_proc[])

src/types.jl

@@ -29,6 +29,7 @@ Base.@kwdef struct Configuration
     julia::Setting{String} = Default("nightly")
     buildflags::Setting{Vector{String}} = Default(String[])
     buildcommands::Setting{String} = Default("make install")
+    environment::Setting{Vector{String}} = Default(String[])
     julia_install_dir::Setting{String} = Default("/opt/julia")
     julia_binary::Setting{String} = Default("julia")
     ## additional Julia arguments to pass to the process
@@ -73,7 +74,7 @@ function Base.show(io::IO, cfg::Configuration)
     println(io, "PkgEval configuration(")
 
     println(io, "  # Julia properties")
-    show_setting.(["julia", "buildflags", "buildcommands", "julia_install_dir", "julia_binary", "julia_args"])
+    show_setting.(["julia", "buildflags", "buildcommands", "environment", "julia_install_dir", "julia_binary", "julia_args"])
     println(io)
 
     println(io, "  # Registry properties")

test/runtests.jl

@@ -58,12 +58,28 @@ config = Configuration(; config_kwargs...)
     if julia_release !== nothing
         p = Pipe()
         close(p.in)
-        PkgEval.sandboxed_julia(config, `-e 'println(VERSION)'`; stdout=p.out)
+        PkgEval.sandboxed_julia(config, `-e 'print(VERSION)'`; stdout=p.out)
         version_str = read(p.out, String)
         @test parse(VersionNumber, version_str) == julia_release
     end
 end
 
+@testset "environment flags" begin
+    let
+        p = Pipe()
+        close(p.in)
+        PkgEval.sandboxed_julia(config, `-e 'print(get(ENV, "FOO", nothing))'`; stdout=p.out)
+        @test read(p.out, String) == "nothing"
+    end
+
+    let config = Configuration(; environment=["FOO=bar"], config_kwargs...)
+        p = Pipe()
+        close(p.in)
+        PkgEval.sandboxed_julia(config, `-e 'print(get(ENV, "FOO", nothing))'`; stdout=p.out)
+        @test read(p.out, String) == "bar"
+    end
+end
+
 @testset "package installation" begin
     # by name
     let results = evaluate([config],