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feat(graph): also generate the transitive reduction #2282

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merged 4 commits into from
May 10, 2024
Merged

feat(graph): also generate the transitive reduction #2282

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57b7b61
feat(graph): also generate the transitive reduction
erights May 10, 2024
667dc70
fixup! typo
erights May 10, 2024
1b807a3
fixup! what bash format would have done
erights May 10, 2024
cf215d0
fixup! typo
erights May 10, 2024
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16 changes: 12 additions & 4 deletions scripts/graph.sh
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Original file line number Diff line number Diff line change
@@ -1,5 +1,9 @@
#!/bin/bash
# Generates visualizations of the internal package dependency graph.
# Also generates visualizations of the transitive reduction (tred) of
# that graph, which is the minimal graph with the same *transitive*
# dependencies. Much more legible by itelf. Seeing the two side by side
# often helps to understand the full picture.
set -ueo pipefail
DIR=$(dirname -- "${BASH_SOURCE[0]}")
{
Expand All @@ -20,12 +24,16 @@ DIR=$(dirname -- "${BASH_SOURCE[0]}")
'
echo '}'
# normalize
} | dot -Tcanon >packages-graph.dot
dot -Tpng <packages-graph.dot >"$DIR"/../packages-graph.png
} | dot -Tcanon > packages-graph.dot
dot -Tpng <packages-graph.dot > "$DIR"/../packages-graph.png

dot -Tsvg <packages-graph.dot >"$DIR"/../packages-graph.svg
dot -Tsvg <packages-graph.dot > "$DIR"/../packages-graph.svg

if acyclic packages-graph.dot | dot -Tcanon >packages-graph-sans-cycles.dot; then
tred <packages-graph.dot > packages-graph-tred.dot
dot -Tpng <packages-graph-tred.dot > "$DIR"/../packages-graph-tred.png
dot -Tsvg <packages-graph-tred.dot > "$DIR"/../packages-graph-tred.svg

if acyclic packages-graph.dot | dot -Tcanon > packages-graph-sans-cycles.dot; then
echo "No cycles in 'dependencies' of packages."
else
echo "Cycles detected. These lines appear only in the original graph and not the acyclic variant:"
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