Octave modules

pkgs/development/interpreters/octave/build-env.nix

@@ -0,0 +1,83 @@
+{ stdenv, octave, buildEnv
+, makeWrapper, texinfo
+, octavePackages
+, wrapOctave
+, computeRequiredOctavePackages
+, extraLibs ? []
+, extraOutputsToInstall ? []
+, postBuild ? ""
+, ignoreCollisions ? false
+}:
+
+# Create an octave executable that knows about additional packages
+let
+  packages = computeRequiredOctavePackages extraLibs;
+
+in buildEnv {
+  name = "${octave.name}-env";
+  paths = extraLibs ++ [ octave ];
+
+  inherit ignoreCollisions;
+  extraOutputsToInstall = [ "out" ] ++ extraOutputsToInstall;
+
+  buildInputs = [ makeWrapper texinfo wrapOctave ];
+
+  # During "build" we must first unlink the /share symlink to octave's /share
+  # Then, we can re-symlink the all of octave/share, except for /share/octave
+  # in env/share/octave, re-symlink everything from octave/share/octave and then
+  # perform the pkg install.
+  postBuild = ''
+      . "${makeWrapper}/nix-support/setup-hook"
+      # The `makeWrapper` used here is the one defined in
+      # ${makeWrapper}/nix-support/setup-hook
+
+      if [ -L "$out/bin" ]; then
+         unlink $out/bin
+         mkdir -p "$out/bin"
+         cd "${octave}/bin"
+         for prg in *; do
+             if [ -x $prg ]; then
+                makeWrapper "${octave}/bin/$prg" "$out/bin/$prg" --set OCTAVE_SITE_INITFILE "$out/share/octave/site/m/startup/octaverc"
+             fi
+         done
+         cd $out
+      fi
+
+      # Remove symlinks to the input tarballs, they aren't needed.
+      rm $out/*.tar.gz
+
+      createOctavePackagesPath $out ${octave}
+
+      for path in ${stdenv.lib.concatStringsSep " " packages}; do
+          if [ -e $path/*.tar.gz ]; then
+             $out/bin/octave-cli --eval "pkg local_list $out/.octave_packages; \
+                                         pkg prefix $out/${octave.octPkgsPath} $out/${octave.octPkgsPath}; \
+                                         pfx = pkg (\"prefix\"); \
+                                         pkg install -nodeps -local $path/*.tar.gz"
+          fi
+      done
+
+      # Re-write the octave-wide startup file (share/octave/site/m/startup/octaverc)
+      # To point to the new local_list in $out
+      addPkgLocalList $out ${octave}
+
+      wrapOctavePrograms "${stdenv.lib.concatStringsSep " " packages}"
+     '' + postBuild;
+
+  inherit (octave) meta;
+
+  passthru = octave.passthru // {
+    interpreter = "$out/bin/octave";
+    inherit octave;
+    env = stdenv.mkDerivation {
+      name = "interactive-${octave.name}-environment";
+
+      buildCommand = ''
+        echo >&2 ""
+        echo >&2 "*** octave 'env' attributes are intended for interactive nix-shell sessions, not for building! ***"
+        echo >&2 ""
+        exit 1
+      '';
+    };
+  };
+}

pkgs/development/interpreters/octave/build-octave-package.nix

@@ -0,0 +1,113 @@
+# Generic builder for GNU Octave libraries.
+# This is a file that contains nested functions. The first, outer, function
+# is the library- and package-wide details, such as the nixpkgs library, any
+# additional configuration provided, and the namePrefix to use (based on the
+# pname and version of Octave), the octave package, etc.
+
+{ lib
+, stdenv
+, config
+, octave
+, texinfo
+, computeRequiredOctavePackages
+, writeRequiredOctavePackagesHook
+}:
+
+# The inner function contains information required to build the individual
+# libraries.
+{ fullLibName ? "${attrs.pname}-${attrs.version}"
+
+, src
+
+, dontPatch ? false
+, patches ? []
+, patchPhase ? ""
+
+, enableParallelBuilding ? true
+# Build-time dependencies for the package, which were compiled for the system compiling this.
+, nativeBuildInputs ? []
+
+# Build-time dependencies for the package, which may not have been compiled for the system compiling this.
+, buildInputs ? []
+
+# Propagate build dependencies so in case we have A -> B -> C,
+# C can import package A propagated by B
+# Run-time dependencies for the package.
+, propagatedBuildInputs ? []
+
+# Octave packages that are required at runtime for this one.
+# These behave similarly to propagatedBuildInputs, where if
+# package A is needed by B, and C needs B, then C also requires A.
+# The main difference between these and propagatedBuildInputs is
+# during the package's installation into octave, where all
+# requiredOctavePackages are ALSO installed into octave.
+, requiredOctavePackages ? []
+
+, preBuild ? ""
+
+, meta ? {}
+
+, passthru ? {}
+
+, ... } @ attrs:
+
+let
+  requiredOctavePackages' = computeRequiredOctavePackages requiredOctavePackages;
+
+in stdenv.mkDerivation {
+  packageName = "${fullLibName}";
+  # The name of the octave package ends up being
+  # "octave-version-package-version"
+  name = "${octave.pname}-${octave.version}-${fullLibName}";
+
+  # This states that any package built with the function that this returns
+  # will be an octave package. This is used for ensuring other octave
+  # packages are installed into octave during the environment building phase.
+  isOctavePackage = true;
+
+  OCTAVE_HISTFILE = "/dev/null";
+
+  inherit src;
+
+  inherit dontPatch patches patchPhase;
+
+  dontConfigure = true;
+
+  enableParallelBuilding = enableParallelBuilding;
+
+  requiredOctavePackages = requiredOctavePackages';
+
+  nativeBuildInputs = [
+    octave
+    writeRequiredOctavePackagesHook
+  ]
+  ++ nativeBuildInputs;
+
+  buildInputs = buildInputs ++ requiredOctavePackages';
+
+  propagatedBuildInputs = propagatedBuildInputs ++ [ texinfo ];
+
+  preBuild = if preBuild == "" then
+    ''
+      # This trickery is needed because Octave expects a single directory inside
+      # at the top-most level of the tarball.
+      tar --transform 's,^,${fullLibName}/,' -cz * -f ${fullLibName}.tar.gz
+    ''
+             else
+               preBuild;
+
+  buildPhase = ''
+    runHook preBuild
+
+    mkdir -p $out
+    octave-cli --eval "pkg build $out ${fullLibName}.tar.gz"
+
+    runHook postBuild
+  '';
+
+  # We don't install here, because that's handled when we build the environment
+  # together with Octave.
+  dontInstall = true;
+
+  inherit meta;
+}