gnu: emacs: Patch references to /bin/sh.
When attempting to run ert-runner in the build side environment where /bin/sh doesn't exist as part of the emacs-elpy test suite, Emacs was throwing the error "Searching for program: No such file or directory, /bin/sh". This is because the default shell when SHELL is not set was "/bin/sh", as can be seen in callproc.c: sh = getenv ("SHELL"); Vshell_file_name = build_string (sh ? sh : "/bin/sh"); Thus, patch the occurrences of "/bin/sh" in the source files of Emacs to refer to their correct store location. * gnu/packages/emacs.scm (emacs)[phases]{patch-program-file-names}: Add phase.
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@ -131,6 +131,16 @@ (define-public emacs
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"--disable-build-details")
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#:phases
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(modify-phases %standard-phases
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(add-after 'unpack 'patch-program-file-names
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(lambda _
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(substitute* '("src/callproc.c"
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"lisp/term.el"
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"lisp/htmlfontify.el"
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"lisp/textmodes/artist.el"
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"lisp/progmodes/sh-script.el")
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(("\"/bin/sh\"")
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(format "~s" (which "sh"))))
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#t))
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(add-before 'configure 'fix-/bin/pwd
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(lambda _
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;; Use `pwd', not `/bin/pwd'.
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