The GAP command Process hangs on macOS after loading Singular

[mohamed-barakat]

DotToSVG hangs on macOS after loading Singular:

On macOS

$ julia
               _
   _       _ _(_)_     |  Documentation: https://docs.julialang.org
  (_)     | (_) (_)    |
   _ _   _| |_  __ _   |  Type "?" for help, "]?" for Pkg help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 1.9.1 (2023-06-07)
 _/ |\__'_|_|_|\__'_|  |  Official https://julialang.org/ release
|__/                   |

julia> using CapAndHomalg
CapAndHomalg v1.5.1
Imported OSCAR's components GAP and Singular_jll
Type: ?CapAndHomalg for more information

julia> LoadPackage( "RingsForHomalg" )

julia> DotToSVG( g"//dot\ndigraph empty{\n}\n" )
GAP: "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"\n \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n<!-- Generated by graphviz version 2.50.0 (20211204.2007)\n -->\n<!-- Title: empty Pages: 1 -->\n<svg width=\"8pt\" height=\"8pt\"\n viewBox=\"0.00 0.00 8.00 8.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n<g id=\"graph0\" class=\"graph\" transform=\"scale(1 1) rotate(0) translate(4 4)\">\n<title>empty</title>\n<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-4 4,-4 4,4 -4,4\"/>\n</g>\n</svg>\n"

julia> HomalgFieldOfRationals( )
GAP: Q

julia> DotToSVG( g"//dot\ndigraph empty{\n}\n" )
GAP: "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"\n \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n<!-- Generated by graphviz version 2.50.0 (20211204.2007)\n -->\n<!-- Title: empty Pages: 1 -->\n<svg width=\"8pt\" height=\"8pt\"\n viewBox=\"0.00 0.00 8.00 8.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n<g id=\"graph0\" class=\"graph\" transform=\"scale(1 1) rotate(0) translate(4 4)\">\n<title>empty</title>\n<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-4 4,-4 4,4 -4,4\"/>\n</g>\n</svg>\n"

julia> HomalgFieldOfRationalsInSingular( )
GAP: Q

julia> DotToSVG( g"//dot\ndigraph empty{\n}\n" )
<hangs>

---

On Ubuntu

$ julia
               _
   _       _ _(_)_     |  Documentation: https://docs.julialang.org
  (_)     | (_) (_)    |
   _ _   _| |_  __ _   |  Type "?" for help, "]?" for Pkg help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 1.9.1 (2023-06-07)
 _/ |\__'_|_|_|\__'_|  |  Official https://julialang.org/ release
|__/                   |

julia> using CapAndHomalg
CapAndHomalg v1.5.1
Imported OSCAR's components GAP and Singular_jll
Type: ?CapAndHomalg for more information

julia> LoadPackage( "RingsForHomalg" )

julia> HomalgFieldOfRationals( )
GAP: Q

julia> DotToSVG( g"//dot\ndigraph empty{\n}\n" )
GAP: "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"\n \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n<!-- Generated by graphviz version 2.50.0 (20211204.2007)\n -->\n<!-- Title: empty Pages: 1 -->\n<svg width=\"8pt\" height=\"8pt\"\n viewBox=\"0.00 0.00 8.00 8.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n<g id=\"graph0\" class=\"graph\" transform=\"scale(1 1) rotate(0) translate(4 4)\">\n<title>empty</title>\n<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-4 4,-4 4,4 -4,4\"/>\n</g>\n</svg>\n"

julia> HomalgFieldOfRationalsInSingular( )
GAP: Q

julia> DotToSVG( g"//dot\ndigraph empty{\n}\n" )
GAP: "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"\n \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n<!-- Generated by graphviz version 2.50.0 (20211204.2007)\n -->\n<!-- Title: empty Pages: 1 -->\n<svg width=\"8pt\" height=\"8pt\"\n viewBox=\"0.00 0.00 8.00 8.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n<g id=\"graph0\" class=\"graph\" transform=\"scale(1 1) rotate(0) translate(4 4)\">\n<title>empty</title>\n<polygon fill=\"white\" stroke=\"transparent\" points=\"-4,4 -4,-4 4,-4 4,4 -4,4\"/>\n</g>\n</svg>\n"

julia> 

[mohamed-barakat]

@fingolfin: Do you have any idea why this happens?

[mohamed-barakat]

Superseded by oscar-system/GAP.jl#902.