initial commit

1 files changed, 55 insertions, 0 deletions

diff --git a/env.nix b/env.nix
new file mode 100644
index 0000000..f0ea840
--- /dev/null
+++ b/env.nix
@@ -0,0 +1,55 @@
+{ nixpkgs ? import <nixpkgs> {} }:
+
+let
+  pname = "regfish";
+  version = "1";
+
+  buildInputs = with pkgs; [
+    hsEnv
+  ];
+
+  extraCmds = with pkgs; ''
+    export HISTFILE="\$HOME/.history/env-${pname}"
+    export MANPATH=\$MANPATH:${lftp}/share/man
+    $(grep export ${hsEnv.outPath}/bin/ghc)
+    ${mkExports staticPkgs}
+    if test -f "\$HOME/.env-${pname}"; then
+      . "\$HOME/.env-${pname}"
+    fi
+  '';
+
+  hsEnv = hsPkgs.ghcWithPackagesOld (self: with self;
+    [
+      acidState
+      cabalInstall
+      tagsoup
+      wreq
+    ]
+  );
+
+  hsPkgs = pkgs.haskellPackages_ghc783_profiling.override {
+    extension = self: super: with self; {
+    };
+  };
+
+  pkgs = nixpkgs // staticPkgs;
+  staticPkgs = with nixpkgs; {
+  };
+
+  #{{{ mkExports : set -> string
+  # Create shell script that exports a set's attributes.
+  mkExports = set: with builtins; with pkgs.lib.strings;
+    let
+      # XXX attribute names are not escaped, they have to be sane
+      # XXX the value should not contain <newline>
+      mkExport = k: "export ${k}=${escapeSh (getAttr k set)}";
+      escapeSh = stringAsChars (c: "\\${c}");
+    in
+      concatStringsSep "\n" (map mkExport (attrNames set));
+  #}}}
+
+in pkgs.myEnvFun {
+  name = "${pname}-${version}";
+  inherit buildInputs extraCmds;
+}
+# vim: set fdm=marker :